EDUARDO HIROSHI AKAISHI
Projetos de Pesquisa
Unidades Organizacionais
LIM/62 - Laboratório de Fisiopatologia Cirúrgica, Hospital das Clínicas, Faculdade de Medicina
3 resultados
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- Abdominal wall reconstruction after desmoid type fibromatosis radical resection: Case series from a single institution and review of the literature(2017) NETO, S. D. Couto; TEIXEIRA JR., F.; MENEGOZZO, C. A. M.; ALBERTINI, A.; AKAISHI, E. H.; UTIYAMA, E. M.BACKGROUND: Abdominal wall desmoid type fibromatosis management has been changing over recent years, from an aggressive approach towards a more conservative one. When radical resection is indicated, the surgical team faces the challenge of abdominal wall reconstruction, for which optimal technique is still debated. The present study reports the experience from a single center with abdominal closures after desmoid type fibromatosis resection. MATERIAL AND METHODS: Retrospective analysis of patients who underwent abdominal wall closure after sporadic abdominal desmoid type fibromatosis radical resection from 1982 to 2013. RESULTS: Twenty-seven patients were included, mean tumor diameter was 10 + 5.3 cm, and the main choice of abdominal wall reconstruction was midline closure with anterior rectus sheath relaxing incisions and polypropylene onlay mesh (74% of the cases). Only 7% of the cases required more complex procedures for skin closure. Mean follow-up was 5 years and 89% remained disease-free. No grade 4 or 5 complications were observed. CONCLUSION: High midline fascial closure rate can be achieved after resection of abdominal wall desmoid tumor using relaxing incisions and mesh, with low complication rate. (C) 2017 The Author(s).
- Leiomyosarcoma of the inferior vena cava: Survival rate following radical resection(2017) TEIXEIRA JR., Frederico Jose Ribeiro; COUTO NETTO, Sergio Dias do; PERINA, Andre Luis De Freitas; TORRICELLI, Fabio C. M.; TEIXEIRA, Luciana Ragazzo; ZERATI, Antonio Eduardo; FERREIRA, Fabio de Oliveira; AKAISHI, Eduardo Hiroshi; NAHAS, William Carlos; UTIYAMA, Edivaldo MassazoLeiomyosarcoma (LMS) of inferior vena cava (IVC) is a rare neoplasm affecting approximately 1/100,000 people. The prognosis is poor and potential curative intent occurs through challenging operations, such as vena cava resection, occasionally multivisceral when required, and vascular reconstruction. There are few retrospective series regarding this retroperitoneal neoplasm, and the aim of the present study was to discuss the experience at the Sao Paulo Cancer Institute and Clinics Hospital of University of Sao Paulo Medical School, Sao Paulo, Brazil. The current study is a retrospective review of 7 patients treated in the two tertiary hospitals between 2005 and 2013. Oncological and operative aspects were discussed, primarily regarding surgical aspects highlighting en bloc resection, vascular reconstruction, and the overall survival and recurrence rates. All the patients were treated with radical intent, 4 of whom underwent multivisceral resection, with the kidney being the most resected organ. The location of the IVC tumor was described using Kulaylat's description and the median tumor size was 10 cm. Vascular reconstruction was necessary in 4 patients. The overall survival rate at 3 and 5 years was 100, and 25%, respectively. The disease-free survival rate at 3 and 5 years was 57 and 20%, respectively. In conclusion, IVC LMS is a rare and severe retroperitoneal neoplasm, with multivisceral resections remaining a surgical challenge. The treatment requires numerous experienced surgeons and the impact of microscopic free margins remains unclear. Vascular reconstruction depends on several aspects regarding primarily the topography of the tumor.
- Sporadic Abdominal Wall Desmoid type Fibromatosis: treatment paradigm after thirty two years(2018) COUTO NETTO, S. D.; TEIXEIRA, F.; MENEGOZZO, C. A. M.; LEAO-FILHO, H. M.; ALBERTINI, A.; FERREIRA, F. O.; AKAISHI, E. H.; UTIYAMA, E. M.Background: Desmoid-type fibromatosis is a benign mesenchymal neoplastic process. It exhibits an uncertain growth pattern and high recurrence rate. Previously radical surgical resection was the mainstay of treatment but recently more surgeons are opting for conservative management with observation (""wait and see"" policy). The authors intend to evaluate different therapeutic modalities and ontological outcomes for abdominal wall desmoid tumors. Methods: We performed a retrospective study of patients who underwent surgical, hormonal or chemotherapy treatment for abdominal wall desmoid tumors between 1982 to 2014 at two institutions affiliated with the University of Sao Paulo, Brazil. Results: In the study period, 32 patients were included. Twenty-seven patients had surgery upfront. Of those, 89% were women with a median age of 33 years. Mean tumor size was 10 cm. Pathology confirmed free margins in 92% of resections. Tumor recurrence rate was 11%, with median relapse-free survival being 24 months. Multivariate analysis showed that positive final margins (p < 0.001) and positive frozen section (p = 0.001) were independent predictors of recurrence. For the 5 patients who underwent pharmacological therapy, median age was 33 years and median tumor diameter before treatment was 13 cm. Four patients exhibited partial response by Response Evaluation Criteria in Solid Tumors (RECIST). The single patient who did not respond to RECIST underwent radiotherapy. Conclusion: Desmoid tumor treatment has been evolving over the past decade towards a more conservative approach. Pharmacological treatment may result in tumor size regression. When surgical excision is indicated, positive margins represent an important prognostic factor for local tumor recurrence.