RODRIGO AMBAR PINTO
Projetos de Pesquisa
Unidades Organizacionais
Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas, Faculdade de Medicina - Médico
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
6 resultados
Resultados de Busca
Agora exibindo 1 - 6 de 6
- Magnifying chromoendoscopy is a reliable method in the selection of rectal neoplasms for local excision(2023) KIMURA, C. M. S.; KAWAGUTI, F. S.; HORVAT, N.; NAHAS, C. S. R.; MARQUES, C. F. S.; PINTO, R. A.; REZENDE, D. T. de; SEGATELLI, V.; SAFATLE-RIBEIRO, A. V.; JUNIOR, U. R.; MALUF-FILHO, F.; NAHAS, S. C.Purpose Adequate staging of early rectal neoplasms is essential for organ-preserving treatments, but magnetic resonance imaging (MRI) frequently overestimates the stage of those lesions. We aimed to compare the ability of magnifying chromoendoscopy and MRI to select patients with early rectal neoplasms for local excision. Methods This retrospective study in a tertiary Western cancer center included consecutive patients evaluated by magnifying chromoendoscopy and MRI who underwent en bloc resection of nonpedunculated sessile polyps larger than 20 mm, laterally spreading tumors (LSTs) >= 20 mm, or depressed-type lesions of any size (Paris 0-IIc). Sensitivity, specificity, accuracy, and positive and negative predictive values of magnifying chromoendoscopy and MRI to determine which lesions were amenable to local excision (i.e., <= T1sm1) were calculated. Results Specificity of magnifying chromoendoscopy was 97.3% (95% CI 92.2-99.4), and accuracy was 92.7% (95% CI 86.7-96.6) for predicting invasion deeper than T1sm1 (not amenable to local excision). MRI had lower specificity (60.5%, 95% CI 43.4-76.0) and lower accuracy (58.3%, 95% CI 43.2-72.4). Magnifying chromoendoscopy incorrectly predicted invasion depth in 10.7% of the cases in which the MRI was correct, while magnifying chromoendoscopy provided a correct diagnosis in 90% of the cases in which the MRI was incorrect (p = 0.001). Overstaging occurred in 33.3% of the cases in which magnifying chromoendoscopy was incorrect and 75% of the cases in which MRI was incorrect. Conclusion Magnifying chromoendoscopy is reliable for predicting invasion depth in early rectal neoplasms and selecting patients for local excision.
bookPart Cirurgia paliativa(2023) PINTO, Rodrigo Ambar; CORRêA NETO, Issac José Felippe- Laparoscopic Frykman-Goldberg procedure for internal rectal prolapse and chronic constipation - A video vignette(2023) SOBRADO, Lucas Faraco; PINTO, Rodrigo Ambar; SOBRADO, Carlos Walter
- Incidence of Intestinal Constipation During the COVID-19 Pandemic Period in Medical Students from a Private Institution in São Paulo, SP(2023) CORRêA NETO, Isaac José Felippe; SILVA, Alisson de Lucena; TAJIRI, Renato Cardoso de Melo; THEIS, Cláudia; SCHELLE, Gabriela; PINTO, Rodrigo Ambar; NISHIYAMA, Victor Keniti Gomes; ROBLES, LaercioAbstract Introduction Chronic intestinal constipation (CIC) presents an incidence of 2.6 to 30.7% in the overall population and due to the social reality imposed by the coronavirus pandemic, some behavior changes in the Brazilian population occurred that might or not be associated with alterations of CIC prevalence. Objective To assess CIC incidence in medical students before and during the COVID-19 pandemic in Brazil in a private higher educational institution in the city of São Paulo, state of São Paulo. Methods Clinic data were collected through Google Forms software from the same students seeking to analyze the variables before (year of 2019) and during the coronavirus pandemic. The data were: age, sex, body mass index, constipation referred in a subjective way and confirmed through the ROME III criteria, feces consistency and anxiety and/or depression during the pandemic. Results A total of 126 medical students from a private higher education institution from São Paulo, SP were included. The average age was 22.9 years old, 70.6% were female and the average BMI was 23.3 kg/m2. Regarding the ROME III criteria, 32.5% presented > 2 in 2019 and 42.1% during the pandemic. Concerning the feces consistency, 31.75 and 35.71% presented dry Bristol 1 feces or in both periods, respectively. Conclusion It was observed an increase in the prevalence of chronic intestinal constipation in medical students from a private higher education institution from São Paulo, state of São Paulo, during the COVID-19 pandemic, as well as dryness in the feces.
bookPart Preparo de cólon nas cirurgias eletivas e de emergência(2023) PINTO, Rodrigo Ambar; CORRêA NETO, Isaac José Felippe- LAPAROSCOPIC RIGHT AND LEFT COLECTOMY: WHICH PROVIDES BETTER POSTOPERATIVE RESULTS FOR ONCOLOGY PATIENTS?(2023) PINTO, Rodrigo Ambar; SOARES, Diego Fernandes Maia; GERBASI, Lucas; NAHAS, Caio Sergio Rizkallah; MARQUES, Carlos Frederico Sparapan; BUSTAMANTE-LOPES, Leonardo Alfonso; CAMARGO, Mariane Gouvea Monteiro de; NAHAS, Sergio CarlosBACKGROUND: The laparoscopic approach considerably reduced the morbidity of colorectal surgery when compared to the open approach. Among its benefits, we can highlight less intraoperative bleeding, early oral intake, lower rates of surgical site infection, incisional hernia, and postoperative pain, and earlier hospital discharge. AIMS: To compare the perioperative morbidity of right versus left colectomy for cancer and the quality of laparoscopic oncologic resection. METHODS: Retrospective analysis of patients submitted to laparoscopic right and left colctomy between 2006 and 2016. Postoperative complications were classified using the Clavien-Dindo scale, 30 days after surgery. RESULTS: A total of 293 patients were analyzed, 97 right colectomies (33.1%) and 196 left colectomies (66.9%). The averageage was 62.8 years. The groups were comparable in terms of age, comorbidities, body mass index, and the American Society of Anesthesiology (ASA) classification. Preoperative transfusion was higher in the right colectomy group (5.1% versus 0.4%, p=0.004, p<0.05). Overall, 233 patients (79.5%) had no complications. Complications found were grade I and II in 62 patients (21.1%) and grade III to V in 37 (12.6%). Twenty-three patients (7.8%) underwent reoperation. The comparison between left and right colectomy was not statistically different for operative time, conversion, reoperation, severe postoperative complications, and length of stay. The anastomotic leak rate was comparable in both groups(5.6% versus 2.1%, p=0.232, p>0.05). The oncological results were similar in both surgeries. In multiple logistic regression, ASA statistically influenced the worst results (>= III; p=0.029, p<0.05). CONCLUSIONS: The surgical and oncological results of laparoscopic right and left colectomies are similar, making this the preferred approach for both procedures.