Synchronous Neuroendocrine Carcinoma of Colon Presenting as Subacute Intestinal Obstruction-a Rare Case Report

摘要

Introduction: Neuroendocrine tumors (NETs) account for only 2% of all gastrointestinal malignancies [1]. Most neuroendocrine tumors are carcinoids and they have a better prognosis than conventional adenocarcinomas. On the other hand, neuroendocrine carcinomas are usually aggressive and have a poor prognosis [2, 3]. The most frequent location in the digestive tract is the appendix, ileum, and rectum. Colon is a rare site and the incidence so far reported ranges from 0.1 to 3.9%, and the synchronous presence of neuroendocrine carcinomas at two different locations is even a rare finding [2-5]. We present here a case with synchronous neuroendocrine carcinomas of colon presenting with subacute intestinal obstruction.