Are hemicolectomies still indicated in patients with neuroendocrine tumors of the appendix 1-2cm? A retrospective Europe-wide cohort study

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Introduction: Awareness of a potential global overtreatment by performing oncological resections for appendiceal neuroendocrine tumors (aNET) 1-2cm is increasing.

Aim(s): To assess the malignant potential of aNET 1-2cm in patients with or without right-sided hemicolectomy.

Materials and methods: Patients with aNET 1-2cm from 40 European institutions diagnosed between January 2000 and December 2010 were included. Primary outcomes were frequency of distant metastases and tumor-related mortality rate. Secondary outcomes included frequency of regional lymph node metastases, corresponding histopathological risk factors and overall survival.

Conference:

Presenting Author: Nesti C

Authors: Nesti C, Bräutigam K, Zwahlen M, Perren A,

Keywords: appendix, neuroendocrine tumor, surgery, hemicolectomy, metastasis, survival,