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CC BY-NC-ND 4.0 · Journal of Coloproctology 2021; 41(02): 152-155
DOI: 10.1055/s-0041-1724064
Original Article

Appendiceal Neuroendocrine Tumours – Experience of One Service

Tumores neuroendócrinos do apêndice – Experiência de um serviço
Vítor Devezas 
1   Department of Surgery, Centro Hospitalar Universitário de São João (CHUSJ), Porto, Portugal
2   Department of Surgery, Faculdade de Medicina da Universidade do Porto (FMUP), Porto, Portugal
,
Laura Elisabete Barbosa 
1   Department of Surgery, Centro Hospitalar Universitário de São João (CHUSJ), Porto, Portugal
2   Department of Surgery, Faculdade de Medicina da Universidade do Porto (FMUP), Porto, Portugal
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Abstract

Tumours of the appendix are rare and tend to be diagnosed incidentally, in cases of acute appendicitis. For some authors, appendiceal neuroendocrine tumours (ANETs) are the most frequent neoplasm of the appendix, observed in 0.3% to 0.9% of cases acute appendicitis. The present is a unicentric retrospective study conducted between January 2005 and March 2017. Out of a total of 3,007 surgeries for appendiceal pathologies performed in the adult population at the hospital where the present study was conducted, there were 70 (2.33%) malignant cases, 20 (28.6%) of which were ANETs. The patients had a median age of 44 years (range: 18 to 85 years), and were predominantly women (there were 1.9 times more women than men). In 16 cases (80%), a simple appendicectomy was performed (1 patient was submitted to a right hemicolectomy later). The cases of ANETs had a good prognosis in our series: 85% of the patients are either alive today or were alive after 5 years of follow-up. Despite the fact that ANETs are described as the most frequent tumor of the appendix, this was not confirmed in our series, in which they only represented 28.6% of the cases; adenocarcinoma was the most frequent tumor (65.7%) among our sample.

Resumo

Tumores do apêndice são raros, e tendem a ser diagnosticados de forma incidental, em casos de apendicite aguda. Para alguns autores, tumores neuroendócrinos do apêndice (TNEAs) são as neoplasias mais frequentes do apêndice, e são observados em 0,3 a 0,9% de todos os casos agudos de apendicite. Este é um estudo monocêntrico e retrospectivo realizado entre janeiro de 2005 e março de 2017. Entre um total de 3.007 cirurgias para patologias do apêndice realizadas na população adulta no hospital em que o estudo foi conduzido, houve 70 (2,33%) casos de malignidade, 20 (28,6%) dos quais eram TNEAs. Os pacientes tinham uma idade média de 44 anos (gama: 18–85 anos), e eram predominantemente mulheres (havia 1,9 vezes mais mulheres do que homens). Em 16 casos (80%), realizou-se uma simples apendicectomia (1 paciente foi submetido a uma hemicolectomia direita mais tarde). Os casos de TNEAs tiveram um bom prognóstico em nossa série: 85% dos pacientes estão vivos hoje, ou estavam após um seguimento de 5 anos. Apesar de os TNEAs serem descritos como os tumores mais frequentes do apêndice, isso não foi confirmado nesta série, na qual eles representaram apenas 28,6% dos casos; adenocarcinoma foi o tumor mais frequente (65,7%) em nossa amostra.

Keywords

appendix - neuroendocrine tumors - carcinoids - appendectomy

Palavras-chave

apêndice - tumores neuroendócrinos - carcinoides - apendicectomia

Authors' Contributions

All authors equally contributed to this article and approved the final manuscript.




Publikationsverlauf

Eingereicht: 14. August 2020

Angenommen: 07. Juli 2020

Artikel online veröffentlicht:
24. Mai 2021

© 2021. Sociedade Brasileira de Coloproctologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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