Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors

Background. The incidence of small nonfunctioning neuroendocrine pancreatic tumors (NF-PNETs) has been increasing systematically in the last few decades. Surgical resection was once considered the treatment of choice but has been questioned in the direction of a more conservative approach for select...

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Main Authors: Estela Regina Ramos Figueira, Julia Fray Ribeiro, Thiago Costa Ribeiro, Ricardo Jureidini, Guilherme Naccache Namur, Thiago Nogueira Costa, Telesforo Bacchella, Ivan Cecconello
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:Gastroenterology Research and Practice
Online Access:http://dx.doi.org/10.1155/2021/6650386
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author Estela Regina Ramos Figueira
Julia Fray Ribeiro
Thiago Costa Ribeiro
Ricardo Jureidini
Guilherme Naccache Namur
Thiago Nogueira Costa
Telesforo Bacchella
Ivan Cecconello
author_facet Estela Regina Ramos Figueira
Julia Fray Ribeiro
Thiago Costa Ribeiro
Ricardo Jureidini
Guilherme Naccache Namur
Thiago Nogueira Costa
Telesforo Bacchella
Ivan Cecconello
author_sort Estela Regina Ramos Figueira
collection DOAJ
description Background. The incidence of small nonfunctioning neuroendocrine pancreatic tumors (NF-PNETs) has been increasing systematically in the last few decades. Surgical resection was once considered the treatment of choice but has been questioned in the direction of a more conservative approach for selected patients. Our aim was to analyze the outcome of surgical resection of small (≤3cm) NF-PNETs. Methods. We retrospectively evaluated 14 patients with sporadic NF-PNETs who underwent pancreatic resection. Data were collected from patients’ medical records. Results. Of the 14 patients included, 35.71% were men, and the average age was 52.36±20.36 years. Comorbidities were present in 92.86% of the cases. The incidence of postoperative complications was 42.86%, the 30-day mortality was zero, and the length of follow-up was 3.31±3.0 years. The results of pathological evaluations revealed WHO grade I in 42.86% of cases, II in 21.43%, and neuroendocrine carcinoma in 35.71%. The median tumor size was 1.85cm (range, 0.5–3cm), and 2 cases had synchronous metastasis. The median TNM stage was IIa (range, I–IV). The disease-free and patient survival rates were 87.5% and 100% at 3 years and 43.75% and 75% at 10 years, respectively. The tumor pathological grade was significantly higher in head tumors than body-tail tumors, but there were no differences with respect to tumor size and TNM staging. Conclusion. A surgical approach to treat small sporadic NF-PNETs is safe with low mortality and high patient survival. Based on these data, small pancreatic head tumors can be more aggressive, suggesting that surgical resection is still the best option to treat small nonfunctioning PNETS. Thus, conservative treatment should be indicated very cautiously for only cases with absolute contraindications for surgery.
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spelling doaj-art-18f5ec54a0524ad0a5c7e45892320a7e2025-02-03T05:49:16ZengWileyGastroenterology Research and Practice1687-61211687-630X2021-01-01202110.1155/2021/66503866650386Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic TumorsEstela Regina Ramos Figueira0Julia Fray Ribeiro1Thiago Costa Ribeiro2Ricardo Jureidini3Guilherme Naccache Namur4Thiago Nogueira Costa5Telesforo Bacchella6Ivan Cecconello7Hospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilUniversity of São Paulo School of Medicine, Scientific Research in Medicine FAPESP n° 2019/03584-0, Sao Paulo, BrazilHospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilHospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilHospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilHospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilHospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilHospital das Clinicas and Instituto do Cancer (ICESP) of University of São Paulo School of Medicine, Division of Digestive Surgery, Sao Paulo, BrazilBackground. The incidence of small nonfunctioning neuroendocrine pancreatic tumors (NF-PNETs) has been increasing systematically in the last few decades. Surgical resection was once considered the treatment of choice but has been questioned in the direction of a more conservative approach for selected patients. Our aim was to analyze the outcome of surgical resection of small (≤3cm) NF-PNETs. Methods. We retrospectively evaluated 14 patients with sporadic NF-PNETs who underwent pancreatic resection. Data were collected from patients’ medical records. Results. Of the 14 patients included, 35.71% were men, and the average age was 52.36±20.36 years. Comorbidities were present in 92.86% of the cases. The incidence of postoperative complications was 42.86%, the 30-day mortality was zero, and the length of follow-up was 3.31±3.0 years. The results of pathological evaluations revealed WHO grade I in 42.86% of cases, II in 21.43%, and neuroendocrine carcinoma in 35.71%. The median tumor size was 1.85cm (range, 0.5–3cm), and 2 cases had synchronous metastasis. The median TNM stage was IIa (range, I–IV). The disease-free and patient survival rates were 87.5% and 100% at 3 years and 43.75% and 75% at 10 years, respectively. The tumor pathological grade was significantly higher in head tumors than body-tail tumors, but there were no differences with respect to tumor size and TNM staging. Conclusion. A surgical approach to treat small sporadic NF-PNETs is safe with low mortality and high patient survival. Based on these data, small pancreatic head tumors can be more aggressive, suggesting that surgical resection is still the best option to treat small nonfunctioning PNETS. Thus, conservative treatment should be indicated very cautiously for only cases with absolute contraindications for surgery.http://dx.doi.org/10.1155/2021/6650386
spellingShingle Estela Regina Ramos Figueira
Julia Fray Ribeiro
Thiago Costa Ribeiro
Ricardo Jureidini
Guilherme Naccache Namur
Thiago Nogueira Costa
Telesforo Bacchella
Ivan Cecconello
Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors
Gastroenterology Research and Practice
title Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors
title_full Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors
title_fullStr Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors
title_full_unstemmed Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors
title_short Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors
title_sort insights of outcome after resection of small nonfunctioning neuroendocrine pancreatic tumors
url http://dx.doi.org/10.1155/2021/6650386
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