Artigos e Materiais de Revistas Científicas - HC/InRad

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A coleção de Artigos e Materiais de Revistas Científicas engloba artigos originais, artigos de revisão, artigos de atualização, artigos técnicos, relatos de experiências, resenhas, ensaios, editoriais, cartas ao editor, debates, notas científicas e técnicas, depoimentos, entrevistas e pontos de vista. Consideram-se como artigos científicos originais os trabalhos redigidos para divulgação de informações e resultados sobre determinada pesquisa científica, publicados em periódico científico após avaliação por outros pesquisadores.


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  • article 0 Citação(ões) na Scopus
    T1/T2-weighted ratio: A feasible MRI biomarker in multiple sclerosis
    (2024) BOAVENTURA, Mateus; SASTRE-GARRIGA, Jaume; RIMKUS, Carolina de Medeiros; ROVIRA, Alex; PARETO, Deborah
    T1/T2-weighted ratio is a novel magnetic resonance imaging (MRI) biomarker based on conventional sequences, related to microstructural integrity and with increasing use in multiple sclerosis (MS) research. Different from other advanced MRI techniques, this method has the advantage of being based on routinely acquired MRI sequences, a feature that enables analysis of retrospective cohorts with considerable clinical value. This article provides an overview of this method, describing the previous cross-sectional and longitudinal findings in the main MS clinical phenotypes and in different brain tissues: focal white matter (WM) lesions, normal-appearing white matter (NAWM), cortical gray matter (GM), and deep normal-appearing gray matter (NAGM). We also discuss the clinical associations, possible reasons for conflicting results, correlations with other MRI-based measures, and histopathological associations. We highlight the limitations of the biomarker itself and the methodology of each study. Finally, we update the reader on its potential use as an imaging biomarker in research.
  • article 0 Citação(ões) na Scopus
    Results of consolidative radiotherapy for relapsed diffuse B-cell lymphoma
    (2023) MAURO, Geovanne Pedro; RIBEIRO NETO, Mario; CARVALHO, Heloisa de Andrade
    Background: Recurrent diffuse large B-cell lymphoma (DLBCL) is a disease with high mortality. The standard of care involves autologous stem-cell transplantation (ASCT), which is not always feasible. We investigated the impact of radiotherapy as part of the salvage treatment for patients with relapsed disease. Materials and methods: Retrospective study of patients with recurrent DLBCL after chemotherapy and consolidative radiotherapy at a single institution. All patients were included if radiation was part of the first treatment. Results: Of 359 patients assessed between 2010 and 2017, 65 (18.1%) presented a recurrence, but only 62 received further treatment and were included in the study. Mean overall survival was 18.6 months since diagnosis and progression-free survival after first progression (PFS2) was 7.7 months. Patients were divided into two groups according to whether they did (24.8%) or did not (75.8%) receive radiation as part of their salvage treatment. Patients that did not receive R-CHOP (rituximab plus cyclophosphamide, doxorubicin hydrochloride, vincristine, and prednisone) in the first line were treated more with radiation in the second line (p = 0.02). Six patients with in-field relapse were re-irradiated. Only 4 patients received ASCT as part of their treatment for relapsed disease. There was no difference in outcomes. Conclusion: There is a place for radiotherapy in the treatment of relapsed DLBCL, particularly when patients do not receive ASCT. Radiotherapy is well-tolerated. More trials to assess the role of radiotherapy for these patients are needed.
  • article 0 Citação(ões) na Scopus
    Vanishing Cystic Air Spaces
    (2023) FARIAS, Lucas de Padua Gomes de; NOMURA, Cesar Higa; SAWAMURA, Marcio Valente Yamada
  • article 0 Citação(ões) na Scopus
    Can we predict who will benefit from the deep inspiration breath hold (DIBH) technique for breast cancer irradiation?
    (2023) STUART, Silvia Radwanski; POCO, Joao Guilherme; RODRIGUES, Marcus Vinicius S. P.; ABE, Ricardo Y.; CARVALHO, Heloisa A.
    Background: The objective was to explore the clinical use of an ""in-house"" prototype developed to monitor respiratory motion to implement the deep inspiration breath hold technique (DIBH), compare dosimetric differences, and assess whether simple anatomic metrics measured on free breathing (FB) computed tomography scan (CT) can help in selecting patients that would benefit the most from the technique. Materials and methods: A prospective study was conducted on patients with left breast cancer with an indication of adjuvant radiotherapy for breast only. Treatment simulation consisted of four series of CTs: the first during FB and three in DIBH to assess the reproducibility and stability of apnea. Contouring was based on the RTOG atlas, and planning was done in both FB and DIBH. Dosimetric and geometric parameters were assessed and compared between FB and DIBH. Results: From June 2020 to December 2021, 30 patients with left breast cancer were recruited. Overall, the DIBH technique presented a mean dose reduction of 24% in the heart and 30% in the left anterior descendent coronary artery (LAD) (p < 0.05). The only geometric parameter correlated to a 30% dose reduction in the mean heart dose and LAD doses was the anterolateral distance from the heart to the chest wall of at least 1.5 cm measured on FB (p < 0.0001). Conclusion: The prototype enabled the use of the DIBH technique with dose reductions in the heart and LAD. The benefit of the DIBH technique can be predicted on FB CT by measuring the distance between the heart and chest wall at the treatment isocenter.
  • article 0 Citação(ões) na Scopus
    Data-driven, cross-disciplinary collaboration: lessons learned at the largest academic health center in Latin America during the COVID-19 pandemic
    (2024) RITTO, Ana Paula; ARAUJO, Adriana Ladeira de; CARVALHO, Carlos Roberto Ribeiro de; SOUZA, Heraldo Possolo De; FAVARETTO, Patricia Manga e Silva; SABOYA, Vivian Renata Boldrim; GARCIA, Michelle Louvaes; KULIKOWSKI, Leslie Domenici; KALLAS, Esper Georges; PEREIRA, Antonio Jose Rodrigues; COBELLO JUNIOR, Vilson; SILVA, Katia Regina; ABDALLA, Eidi Raquel Franco; SEGURADO, Aluisio Augusto Cotrim; SABINO, Ester Cerdeira; RIBEIRO JUNIOR, Ulysses; FRANCISCO, Rossana Pulcineli Vieira; MIETHKE-MORAIS, Anna; LEVIN, Anna Sara Shafferman; SAWAMURA, Marcio Valente Yamada; FERREIRA, Juliana Carvalho; SILVA, Clovis Artur; MAUAD, Thais; GOUVEIA, Nelson da Cruz; LETAIF, Leila Suemi Harima; BEGO, Marco Antonio; BATTISTELLA, Linamara Rizzo; DUARTE, Alberto Jose da Silva; SEELAENDER, Marilia Cerqueira Leite; MARCHINI, Julio; FORLENZA, Orestes Vicente; ROCHA, Vanderson Geraldo; MENDES-CORREA, Maria Cassia; COSTA, Silvia Figueiredo; CERRI, Giovanni Guido; BONFA, Eloisa Silva Dutra de Oliveira; CHAMMAS, Roger; BARROS FILHO, Tarcisio Eloy Pessoa de; BUSATTO FILHO, Geraldo
    Introduction The COVID-19 pandemic has prompted global research efforts to reduce infection impact, highlighting the potential of cross-disciplinary collaboration to enhance research quality and efficiency.Methods At the FMUSP-HC academic health system, we implemented innovative flow management routines for collecting, organizing and analyzing demographic data, COVID-related data and biological materials from over 4,500 patients with confirmed SARS-CoV-2 infection hospitalized from 2020 to 2022. This strategy was mainly planned in three areas: organizing a database with data from the hospitalizations; setting-up a multidisciplinary taskforce to conduct follow-up assessments after discharge; and organizing a biobank. Additionally, a COVID-19 curated collection was created within the institutional digital library of academic papers to map the research output.Results Over the course of the experience, the possible benefits and challenges of this type of research support approach were identified and discussed, leading to a set of recommended strategies to enhance collaboration within the research institution. Demographic and clinical data from COVID-19 hospitalizations were compiled in a database including adults and a minority of children and adolescents with laboratory confirmed COVID-19, covering 2020-2022, with approximately 350 fields per patient. To date, this database has been used in 16 published studies. Additionally, we assessed 700 adults 6 to 11 months after hospitalization through comprehensive, multidisciplinary in-person evaluations; this database, comprising around 2000 fields per subject, was used in 15 publications. Furthermore, thousands of blood samples collected during the acute phase and follow-up assessments remain stored for future investigations. To date, more than 3,700 aliquots have been used in ongoing research investigating various aspects of COVID-19. Lastly, the mapping of the overall research output revealed that between 2020 and 2022 our academic system produced 1,394 scientific articles on COVID-19.Discussion Research is a crucial component of an effective epidemic response, and the preparation process should include a well-defined plan for organizing and sharing resources. The initiatives described in the present paper were successful in our aim to foster large-scale research in our institution. Although a single model may not be appropriate for all contexts, cross-disciplinary collaboration and open data sharing should make health research systems more efficient to generate the best evidence.
  • article 2 Citação(ões) na Scopus
    Static and dynamic high-resolution ultrasound analysis of tissue distribution of poly-L-lactic acid particles during subdermal application in two different presentations
    (2023) CUNHA, M. G. da; SIGRIST, R.
    Background: All the changes the skin goes through, peaking at flaccidity, occur in the dermis and hypodermis, leading to loss of support and a lower capacity to totally accommodate displacements or any loss of subjacent volume, bringing about the onset of furrows and sagging. Improvements in facial sagging may be obtained with the administrations of substances like poly-L-lactic acid (PLLA), which triggers a tissue response through a controlled inflammatory reaction. Objectives: Compare the tissue distribution of the particles of PLLA of both products available in Brazil (Sculptra® and Rennova Elleva®) during and immediately after their subdermal administrations, with 22G cannulas, through high-resolution ultrasound imaging. Methods: A total of four patients aged between 18 and 64 years had the inner part of the upper arms divided into eight quadrants and treated with 16 ml of each product, reconstituted to correspond to 9.5 mg/ml. The sites where PLLA was injected were analyzed through the high-resolution ultrasound during (dynamic imaging) and immediately after the procedures (static imaging). Results: During Sculptra® injection, high-resolution ultrasound revealed that its distribution did not follow the trajectory of the cannula homogeneously. It was characterized by a more hyperechogenic central portion and an anechogenic peripheral portion, forming discrete posterior acoustic shadowing at times. Regarding Rennova ELLEVA® injection, the high-resolution ultrasound analysis showed a homogeneous distribution of the product across the subcutaneous tissue following the trajectory of the cannula without formation of significant interface with the surrounding tissue, maintaining the sonographic aspect of thinly granulated hyperechogenic deposits, with strong posterior acoustic shadowing during and immediately after its administration. Conclusion: Static and dynamic high-resolution ultrasound imaging show a more homogenous distribution of PLLA particles with the use of Rennova ELLEVA® when compared with Sculptra®, which may induce the formation of capsules and a subsequent more dispersed fibroplasia, with larger area of action and a possible better therapeutic result. The interest of this article lies in its originality, highlighting the differences in the tissue distribution of two different brands of PLLA particles, which can impact the clinical response to the two products - which we are researching and seems to interfere with the increase in dermal thickness.
  • article 0 Citação(ões) na Scopus
    Thermal measurements of a muscle-mimicking phantom during ultra-high field magnetic resonance imaging
    At ultra-high field MRI (Bo>7T) it is crucial to predict and control the patient safety. Commonly patient safety is controlled by the power deposited in the tissue (specific absorption rate - SAR). However, temperature distributions do not always correlate directly with SAR distributions, which makes temperature control also a crucial parameter to guarantee patient safety. In this work, temperature changes were accessed by MR thermometry, specifically by the proton resonance frequency shift technique (PRF). A phantom mimicking muscle tissue was used to evaluate the temperature rise caused by the radiofrequency (RF) absorption during 7T MRI, applied through a commercial birdcage head coil. A pulse-sequence protocol was implemented for both, the generation of temperature increase and the MR thermometry. To control the temperature, a digital thermometer was used, and oil tubes were utilized to dismiss the drift effects for PRF. Measurements of the phantom's dielectric characteristics, i.e. conductivity and permittivity, were in good agreement with the literature values for muscle. Spatio-temporal evaluations showed a temperature increase in time via RF exposure and the feasibility of measuring temperature maps using the PRF shift method. The accuracy of the PRF shift method increased when the drift effects were quantified and dismissed, indicating a PRF reading accuracy differing less than 0.5 °C from the thermometer. Results also validate our heating and temperature imaging protocol. This study is a valuable contribution to the evaluation of heating effects caused by RF absorption and demonstrates potential impact on future thermal investigations, which may use different heating sources, as well validate thermal simulations.
  • article 0 Citação(ões) na Scopus
    Glioneuronal and Neuronal Tumors: Who? When? Where? An Update Based on the 2021 World Health Organization Classification
    (2023) AYRES, A. S.; BANDEIRA, G. A.; FERRACIOLLI, S. F.; TAKAHASHI, J. T.; MORENO, R. A.; GODOY, L. F. de Souza; CASAL, Y. R.; LIMA, L. G. C. A. de; FRASSETO, F. P.; LUCATO, L. T.
    Neuronal and glioneuronal tumors usually have a benign course and may have typical imaging characteristics, allowing their diagnosis based on MR imaging findings. The most common lesions are dysembryoplastic neuroepithelial tumors and gangliogliomas, which have typical imaging characteristics. The fifth edition of the World Health Organization Classification of Tumors of the Central Nervous System, recently published in 2021, places greater emphasis on molecular markers to classify tumors of the CNS, leading to extensive changes in the classification of tumors, including neuronal and glioneuronal tumors. The 2021 revision included 3 new tumors types: multinodular and vacuolating neuronal tumor, diffuse glioneuronal tumor with oligodendroglioma-like features and nuclear clusters (a provisional type), and myxoid glioneuronal tumor. Following these recent changes in the World Health Organization classification, we aimed to review the main imaging features of these lesions in relation to their histopathologic and molecular features. Learning Objectives: To list the neuronal and glioneuronal tumors; recognize the main imaging findings and histologic characteristics of neuronal and glioneuronal tumors; know the typical location of each neuronal and glioneuronal tumor; and become familiar with the main molecular alterations of neuronal and glioneuronal tumors to better understand their behavior
  • article 1 Citação(ões) na Scopus
    “Benefits of the pedicled osteoplastic flap as a surgical approach of mastoidectomy in cochlear implant surgery”
    (2022) LOPES, P. T.; BENTO, R. F.; GEBRIM, E. M. Mello Santiago; BECK, R. M. de Oliveira; CARVALLO, R. Mota Memede; SANCHES, S. G. Gandolfi; LESSER, J. C. Cisneros
    Objective: To evaluate the esthetic and functional results of an osteoplastic flap for mastoid cavity closure in cochlear implant surgery. Study design: Double-blind, prospective, randomized clinical trial. Setting: tertiary referral center. Intervention(s): On hundred and twenty-six patients were randomized in 2 groups for cochlear implant surgery. Cases (n: 63) underwent simple mastoidectomy using an anteriorly pedicled osteoplastic flap for mastoid closure. In controls (n: 63), a traditional periosteal flap was used. Evaluation with the POSAS questionnaire was performed 1 year after surgery to assess surgical wound esthetics. Sixteen patients from each group had postoperative CT-scans and wideband tympanometry to assess mastoid aeration and middle ear absorbance. Gender and time after surgery were correlated. Main outcome measure(s): Evaluation of the quality of the surgical wound with the application of a questionnaire validated in the medical literature and translated into Portuguese language called POSAS, considering the perception of the blinded patient and doctor regarding the surgical technique proceeded. A lower POSAS score suggests better esthetics of the surgical wound. Secondary outcomes are volumetric measurement of aeration inside mastoid cavity using 3D computer tomography exam, which aims to analyze the influence of fibrocicatricial retraction in the surgical wound into the mastoid and the interference of its aeration volume in the absorption of sound in the middle ear, using the wideband tympanometry exam. Results: The POSAS questionnaire in the Case group showed a lower level of local pain and itchiness, a skin color and thickness more similar to the surrounding skin and less irregularity and stiffness, with no influence from time after surgery and gender compared to the Control group. The median tomographic volume was 6.37 cc in the cases and 4.60 cc in controls. Wideband tympanometry showed general smaller sound absorbance in the Case group results, specially, at 1000 Hz frequency. No intraoperative or postoperative complications were observed with the osteoplastic flap. Conclusions: This technique is an effective and safe alternative to alleviate common problems of mastoid surgery for cochlear implantation. In addition to esthetic benefits, it has less interference in middle ear physiology of sound absorbance and less fibrous tissue into the mastoid cavity during the follow-up of more than 1 year.
  • article 0 Citação(ões) na Scopus
    Multimodality imaging for investigating constrictive pericarditis
    (2023) MORALES, Kevin Rafael De Paula; VAZ, Andre; COUTO, Renata Muller; FONSECA, Eduardo Kaiser Ururahy Nunes
  • article 1 Citação(ões) na Scopus
    Advances in diffuse glial tumors diagnosis
    (2023) GODOY, Luis Filipe de Souza; PAES, Vitor Ribeiro; AYRES, Aline Sgnolf; BANDEIRA, Gabriela Alencar; MORENO, Raquel Andrade; HIRATA, Fabiana de Campos Cordeiro; SILVA, Frederico Adolfo Benevides; NASCIMENTO, Felipe; CAMPOS NETO, Guilherme de Carvalho; GENTIL, Andre Felix; LUCATO, Leandro Tavares; AMARO JUNIOR, Edson; YOUNG, Robert J.; MALHEIROS, Suzana Maria Fleury
    In recent decades, there have been significant advances in the diagnosis of diffuse gliomas, driven by the integration of novel technologies. These advancements have deepened our understanding of tumor oncogenesis, enabling a more refined stratification of the biological behavior of these neoplasms. This progress culminated in the fifth edition of the WHO classification of central nervous system (CNS) tumors in 2021. This comprehensive review article aims to elucidate these advances within a multidisciplinary framework, contextualized within the backdrop of the new classification. This article will explore morphologic pathology and molecular/genetics techniques (immunohistochemistry, genetic sequencing, and methylation profiling), which are pivotal in diagnosis, besides the correlation of structural neuroimaging radiophenotypes to pathology and genetics. It briefly reviews the usefulness of tractography and functional neuroimaging in surgical planning. Additionally, the article addresses the value of other functional imaging techniques such as perfusion MRI, spectroscopy, and nuclear medicine in distinguishing tumor progression from treatment-related changes. Furthermore, it discusses the advantages of evolving diagnostic techniques in classifying these tumors, as well as their limitations in terms of availability and utilization. Moreover, the expanding domains of data processing, artificial intelligence, radiomics, and radiogenomics hold great promise and may soon exert a substantial influence on glioma diagnosis. These innovative technologies have the potential to revolutionize our approach to these tumors. Ultimately, this review underscores the fundamental importance of multidisciplinary collaboration in employing recent diagnostic advancements, thereby hoping to translate them into improved quality of life and extended survival for glioma patients.
  • article 0 Citação(ões) na Scopus
    Imaging of pediatric skull lytic lesions: A review
    (2024) SANTOS, Mariana; CUNHA, Bruno; ABREU, Vasco; FERRACIOLLI, Suely; GODOY, Luis; MURAKOSHI, Rodrigo; AMARAL, Lazaro Luis Faria; CONCEICAO, Carla
    Skull lesions in pediatric population are common findings on imaging and sometimes with heterogeneous manifestations, constituting a diagnostic challenge. Some lesions can be misinterpreted for their aggressiveness, as with larger lesions eroding cortical bone, containing soft tissue components, leading to excessive and, in some cases, invasive inappropriate etiological investigation. In this review, we present multiple several conditions that may present as skull lesions or pseudolesions, organized by groups (anatomic variants, congenital and development disorders, traumatic injuries, vascular issues, infectious conditions, and tumoral processes). Anatomic variants are common imaging findings that must be recognized by the neuroradiologist. Congenital malformations are rare conditions, such as aplasia cutis congenita and sinus pericranii, usually seen at earlier ages, the majority of which are benign findings. In case of trauma, cephalohematoma, growing skull fractures, and posttraumatic lytic lesions should be considered. Osteomyelitis tends to be locally aggressive and may mimic malignancy, in which cases, the clinical history can be the key to diagnosis. Vascular (sickle cell disease) and tumoral (aneurismal bone cyst, eosinophilic granuloma, metastases) lesions are relatively rare lesions but should be considered in the differential diagnosis, in the presence of certain imaging findings. The main difficulty is the differentiation between the benign and malignant nature; therefore, the main objective of this pictorial essay is to review the main skull lytic lesions found in pediatric age, describing the main findings in different imaging modalities (CT and MRI), allowing the neuroradiologist greater confidence in establishing the differential diagnosis, through a systematic and simple characterization of the lesions.
  • article 2 Citação(ões) na Scopus
    Diagnostic reference level quantities for adult chest and abdomen-pelvis CT examinations: correlation with organ doses
    (2023) COSTA, Paulo Roberto; TOMAL, Alessandra; CASTRO, Jullianna Cristina de Oliveira; NUNES, Isabella Paziam Fernandes; NERSISSIAN, Denise Yanikian; SAWAMURA, Marcio Valente Yamada; LEAO FILHO, Hilton; LEE, Choonsik
    ObjectivesTo evaluate correlations between DRL quantities (DRLq) stratified into patient size groups for non-contrast chest and abdomen-pelvis CT examinations in adult patients and the corresponding organ doses.MethodsThis study presents correlations between DRLq (CTDIvol, DLP and SSDE) stratified into patient size ranges and corresponding organ doses shared in four groups: inside, peripheral, distributed and outside. The demographic, technical and dosimetric parameters were used to identify the influence of these quantities in organ doses. A robust statistical method was implemented in order to establish these correlations and its statistical significance.ResultsMedian values of the grouped organ doses are presented according to the effective diameter ranges. Organ doses in the regions inside the imaged area are higher than the organ doses in peripheral, distributed and outside regions, excepted to the peripheral doses associated with chest examinations. Different levels of statistical significance between organ doses and the DRLq were presented.ConclusionsCorrelations between DRLq and target-organ doses associated with clinical practice can support guidance's to the establishment of optimization criteria. SSDE demonstrated to be significant in the evaluation of organ doses is also highlighted. The proposed model allows the design of optimization actions with specific risk-reduction results.
  • article 1 Citação(ões) na Scopus
    Segmented solenoid RF coils for MRI of ex vivo brain samples at ultra-high field preclinical and clinical scanners
    (2023) PAPOTI, Daniel; SZCZUPAK, Diego; SANTOS, Luiz G. C.; CHAIM, Khallil T.; OTADUY, Maria C. G.; SCHAEFFER, David J.; VIDOTO, Edson L. G.; TANNUS, Alberto; SILVA, Afonso C.
    Magnetic resonance imaging (MRI) is a well-known and widespread imaging modality for neuroscience studies and the clinical diagnoses of neurological disorders, mainly due to its capability to visualize brain microstructures and quantify various metabolites. Additionally, its noninvasive nature makes possible the correlation of high-resolution MRI from ex vivo brain samples with histology, supporting the study of neurodegenerative disorders such as Alzheimer's or Parkinson's disease. However, the quality and resolution of ex vivo MRI highly depend on the availability of specialized radiofrequency coils with maximized filling factors for the different sizes and shapes of the samples to be studied. For instance, small, dedicated radiofrequency (RF) coils are not always commercially available in ultrahigh field whole-body MRI scanners. Even for ultrahigh field preclinical scanners, specific RF coils for ex vivo MRI are expensive and not always available. Here, we describe the design and construction of two RF coils based on the solenoid geometry for ex vivo MRI of human brain tissues in a 7T whole-body scanner and for ex vivo MRI of marmoset brain samples in a 9.4T preclinical scanner. We designed the 7T solenoid RF coil to maximize the filling factor of human brain samples conditioned on cassettes for histology, while the 9.4T solenoid was constructed to accommodate marmoset brain samples conditioned in 50 ml centrifuge tubes. Both solenoid designs operate in transceiver mode. The measured B1 +maps show a high level of homogeneity in the imaging volume of interest, with a high signal-to-noise ratio over the imaging volume. High-resolution (80 mu m in plane, 500 mu m slice thickness) images of human brain samples were acquired with the 7T solenoid, while marmoset brain samples were acquired with an isotropic resolution of 60 mu m using the 9.4T solenoid coil.
  • article 2 Citação(ões) na Scopus
    The Role of Radiomics in Rectal Cancer
    (2023) MIRANDA, Joao; HORVAT, Natally; ARAUJO-FILHO, Jose A. B.; ALBUQUERQUE, Kamila S. S.; CHARBEL, Charlotte; TRINDADE, Bruno M. C.; CARDOSO, Daniel L. L.; FARIAS, Lucas de Padua Gomes de; CHAKRABORTY, Jayasree; NOMURA, Cesar Higa
    PurposeRadiomics is a promising method for advancing imaging assessment in rectal cancer. This review aims to describe the emerging role of radiomics in the imaging assessment of rectal cancer, including various applications of radiomics based on CT, MRI, or PET/CT.MethodsWe conducted a literature review to highlight the progress of radiomic research to date and the challenges that need to be addressed before radiomics can be implemented clinically.ResultsThe results suggest that radiomics has the potential to provide valuable information for clinical decision-making in rectal cancer. However, there are still challenges in terms of standardization of imaging protocols, feature extraction, and validation of radiomic models. Despite these challenges, radiomics holds great promise for personalized medicine in rectal cancer, with the potential to improve diagnosis, prognosis, and treatment planning. Further research is needed to validate the clinical utility of radiomics and to establish its role in routine clinical practice.ConclusionOverall, radiomics has emerged as a powerful tool for improving the imaging assessment of rectal cancer, and its potential benefits should not be underestimated.
  • article 0 Citação(ões) na Scopus
    Recommendation Update for Vascular Ultrasound Evaluation of Carotid and Vertebral Artery Disease: DIC, CBR and SABCV-2023
    (2023) ALBRICKER, Ana Cristina Lopes; FREIRE, Claudia Maria Vilas; SANTOS, Simone Nascimento dos; ALCANTARA, Monica Luiza de; CANTISANO, Armando Luis; PORTO, Carmen Lucia Lascasas; AMARAL, Salomon Israel do; VELOSO, Orlando Carlos Gloria; MORAIS FILHO, Domingos de; TEODORO, Jose Aldo Ribeiro; PETISCO, Ana Claudia Gomes Pereira; SALEH, Mohamed Hassan; BARROS, Marcio Vinicius Lins de; BARROS, Fanilda Souto; ENGELHORN, Ana Luiza Dias Valiente; ENGELHORN, Carlos Alberto; NARDINO, Erica Patricio; SILVA, Melissa Andreia de Moares; BIAGIONI, Luisa Ciucci; SOUZA, Adriano Jose de; SARPE, Anna Karina Paiva; OLIVEIRA, Arthur Curtarelli de; MORAES, Marcelo Rodrigo de Souza; NETO, Miguel Jose Francisco; FRANCOLIN, Peter Celio; ROCHITTE, Carlos Eduardo; IQUIZLI, Rogerio; SANTOS, Alair Augusto Sarmet Moreira Damas dos; MUGLIA, Valdair Francisco; NAVES, Bruno de Lima
  • article 0 Citação(ões) na Scopus
    Prostatic Artery Embolization Using Polyethylene Glycol Microspheres: A 1-Year Follow-up Prospective Study Including 30 Patients
    (2023) PILAN, Bruna Ferreira; ASSIS, Andre Moreira de; MOREIRA, Airton Mota; RODRIGUES, Vanessa Cristina de Paula; ROCHA, Arthur Diego Dias; CARNEVALE, Francisco Cesar
    Purpose: To evaluate safety and effectiveness of prostatic artery embolization (PAE) using polyethylene glycol (PEG) microspheres in patients with moderate-to-severe benign prostatic hyperplasia (BPH).Materials and methods: A single-center, prospective study of 30 patients who underwent PAE from August 2020 to December 2021 using PEG 400-mu m microspheres was conducted. Patient evaluation data using International Prostate Symptom Score (IPSS), quality of life (QoL) score, prostate-specific antigen (PSA), peak urinary flow rate (Qmax), postvoid residual volume (PVR), and prostate volume (PV) at baseline and 3 and 12 months after PAE were obtained.Results: Bilateral PAE was performed in all patients. One patient had early clinical failure (3.3%) and another presented with lower urinary tract symptoms (LUTSs) recurrence (3.3%) at the 12-month follow-up. Twenty-eight patients (93.3%) experienced significant and durable LUTS improvement. Mean absolute (and relative) improvement at 3 and 12 months were: IPSS, 14.6 points (-69%) for both; QoL, 3.3 points (-70%) and 3.5 points (-74%); Qmax, 6.3 mL/s (+78%) and 8.6 mL/s (+100%); PSA reduction, 1.2 ng/mL (-22%) and 1.0 ng/mL (-15%); PVR reduction, 48 mL (-56%) and 58.2 mL (-49%); PV reduction, 23.4 cm(3) (-29%) and 19.6cm(3) (-25%); (P < .05 for all). No major adverse events were observed. Minor adverse events included urinary tract infection (4/30, 13.3%), prostatic tissue elimination (3/30, 10%), penile punctiform ulcer (1/30, 3.3%), and urinary retention (1/30, 3.3%).Conclusions: PAE using PEG microspheres was observed to be effective with sustained LUTS improvement at the 12-month follow-up. The incidence of urinary infection and prostatic tissue elimination was higher than previously reported for other embolics.
  • article 0 Citação(ões) na Scopus
    Characterization of consumption and costs of antimicrobials in intensive care units in a Brazilian tertiary hospital
    (2023) CASTRO, Tazia Lopes de; CAMBIAIS, Amanda Magalhaes Vilas Boas; SFORSIN, Andrea Cassia Pereira; PINTO, Vanusa Barbosa; FALCAO, Maria Alice Pimentel
    Background: The consumption of antimicrobials and the growing resistance of infectious agents to these drugs are not related only to health issues, but also to economic parameters.Objectives: The study objective was to evaluate the consumption of antimicrobials in General and Covid-19 Intensive Care Units (ICUs) and the impact on institutional costs in the largest institute of a tertiary public hospital.Methods: This is a quantitative and retrospective study, which analyzed consumption, through the Defined Daily Dose (DDD), and the annual direct cost of antimicrobials in Reais (R$) and Dollars (US$), from January to December 2021. Results: The total annual consumption (DDD/1000 patient-day) of antimicrobials in the ICUs was 14,368.85. beta-Lactams had the highest total annual value, with a DDD/1000 patient-day of 7062.98, being meropenem the antimi-crobial that reached the highest consumption (3107.20), followed by vancomycin (2322.6). Total consumption was higher in Covid-19 ICUs than in General ICUs, and the annual direct cost of antimicrobials in ICUs was US$560,680.79.Conclusions: The study showed high consumption of broad-spectrum antimicrobials, highlighting the importance of structuring programs to manage the use of antimicrobials, both to reduce antimicrobial consumption and hospital costs, consolidating rational use even in pandemic scenarios.
  • article 0 Citação(ões) na Scopus
    Misdiagnosis in multiple sclerosis in a Brazilian reference center: Clinical, radiological, laboratory profile and failures in the diagnostic process-Cohort study
    (2023) TIEPPO, Eduardo Macedo de Souza; SILVA, Guilherme Diogo; SILVA, Tomas Fraga Ferreira da; ARAUJO, Roger Santana de; OLIVEIRA, Mateus Boaventura de; SPRICIGO, Mariana Gondim Peixoto; PIMENTEL, Gabriela Almeida; CAMPANA, Igor Gusmao; CASTRILLO, Bruno Batitucci; MENDES, Natalia Trombini; TEIXEIRA, Larissa Silva; NUNES, Douglas Mendes; RIMKUS, Carolina de Medeiros; ADONI, Tarso; PEREIRA, Samira Luisa Apostolos; CALLEGARO, Dagoberto
    Background: Multiple sclerosis misdiagnosis remains a problem despite the well-validated McDonald 2017. For proper evaluation of errors in the diagnostic process that lead to misdiagnosis, it is adequate to incorporate patients who are already under regular follow-up at reference centers of demyelinating diseases. Objectives: To evaluate multiple sclerosis misdiagnosis in patients who are on follow-up at a reference center of demyelinating diseases in Brazil. Methods: We designed an observational study including patients in regular follow-up, who were diagnosed with multiple sclerosis at our specialized outpatient clinic in the Hospital of Clinics in the University of Sao Paulo, from 1996 to 2021, and were reassessed for misdiagnosis in 2022. We evaluated demographic information, clinical profile, and complementary exams and classified participants as ""established multiple sclerosis,"" ""non-multiple sclerosis, diagnosed,"" and ""non-multiple sclerosis, undiagnosed."" Failures in the diagnostic process were assessed by the modified Diagnostic Error Evaluation and Research tool. Results: A total of 201 patients were included. After analysis, 191/201 (95.02%) participants were confirmed as ""established multiple sclerosis,"" 5/201 (2.49%) were defined as ""non-multiple sclerosis, diagnosed,"" and 5/201 (2.49%) were defined as ""non-multiple sclerosis, undiagnosed."" Conclusions: Multiple sclerosis misdiagnosis persists in reference centers, emphasizing the need for careful interpretation of clinical findings to prevent errors.
  • article 8 Citação(ões) na Scopus
    Pregnancy After Breast Cancer in Young BRCA Carriers
    (2024) LAMBERTINI, Matteo; BLONDEAUX, Eva; AGOSTINETTO, Elisa; HAMY, Anne-Sophie; KIM, Hee Jeong; MEGLIO, Antonio Di; MOLHO, Rinat Bernstein; HILBERS, Florentine; POGODA, Katarzyna; CARRASCO, Estela; PUNIE, Kevin; BAJPAI, Jyoti; IGNATIADIS, Michail; MOORE, Halle C. F.; PHILLIPS, Kelly-Anne; TOSS, Angela; ROUSSET-JABLONSKI, Christine; PECCATORI, Fedro A.; RENAUD, Tiphaine; FERRARI, Alberta; PALUCH-SHIMON, Shani; FRUSCIO, Robert; CUI, Wanda; WONG, Stephanie M.; VERNIERI, Claudio; RUDDY, Kathryn J.; DIECI, Maria Vittoria; MATIKAS, Alexios; ROZENBLIT, Mariya; VILLARREAL-GARZA, Cynthia; MARCHIS, Laura De; MASTRO, Lucia Del; PUGLISI, Fabio; ESTEVEZ-DIZ, Maria Del Pilar; RODRIGUEZ-WALLBERG, Kenny A.; MRINAKOVA, Bela; MEISTER, Sarah; LIVRAGHI, Luca; CLATOT, Florian; YERUSHALMI, Rinat; ANGELIS, Carmine De; SANCHEZ-BAYONA, Rodrigo; MEATTINI, Icro; CICHOWSKA-CWALINSKA, Natalia; BERLIERE, Martine; SALAMA, Mahmoud; GIORGI, Ugo De; SONNENBLICK, Amir; CHIODI, Camila; LEE, Young-Jin; MARIA, Camille; AZIM JR., Hatem A.; BONI, Luca; PARTRIDGE, Ann H.
    Importance Young women with breast cancer who have germline pathogenic variants in BRCA1 or BRCA2 face unique challenges regarding fertility. Previous studies demonstrating the feasibility and safety of pregnancy in breast cancer survivors included limited data regarding BRCA carriers.Objective To investigate cumulative incidence of pregnancy and disease-free survival in young women who are BRCA carriers.Design, Setting, and Participants International, multicenter, hospital-based, retrospective cohort study conducted at 78 participating centers worldwide. The study included female participants diagnosed with invasive breast cancer at age 40 years or younger between January 2000 and December 2020 carrying germline pathogenic variants in BRCA1 and/or BRCA2. Last delivery was October 7, 2022; last follow-up was February 20, 2023.Exposure Pregnancy after breast cancer.Main Outcomes and Measures Primary end points were cumulative incidence of pregnancy after breast cancer and disease-free survival. Secondary end points were breast cancer-specific survival, overall survival, pregnancy, and fetal and obstetric outcomes.Results Of 4732 BRCA carriers included, 659 had at least 1 pregnancy after breast cancer and 4073 did not. Median age at diagnosis in the overall cohort was 35 years (IQR, 31-38 years). Cumulative incidence of pregnancy at 10 years was 22% (95% CI, 21%-24%), with a median time from breast cancer diagnosis to conception of 3.5 years (IQR, 2.2-5.3 years). Among the 659 patients who had a pregnancy, 45 (6.9%) and 63 (9.7%) had an induced abortion or a miscarriage, respectively. Of the 517 patients (79.7%) with a completed pregnancy, 406 (91.0%) delivered at term (>= 37 weeks) and 54 (10.4%) had twins. Among the 470 infants born with known information on pregnancy complications, 4 (0.9%) had documented congenital anomalies. Median follow-up was 7.8 years (IQR, 4.5-12.6 years). No significant difference in disease-free survival was observed between patients with or without a pregnancy after breast cancer (adjusted hazard ratio, 0.99; 95% CI, 0.81-1.20). Patients who had a pregnancy had significantly better breast cancer-specific survival and overall survival.Conclusions and RelevanceIn this global study, 1 in 5 young BRCA carriers conceived within 10 years after breast cancer diagnosis. Pregnancy following breast cancer in BRCA carriers was not associated with decreased disease-free survival.