Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access
Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc
Journal website http://www.gastrores.org

Case Report

Volume 10, Number 1, February 2017, pages 56-58

Anal Neuroendocrine Tumor Masquerading as External Hemorrhoids: A Case Report

Figures

Figure 1.
Figure 1. Anal mass partially covered with skin.
Figure 2.
Figure 2. A contrast-enhanced CT scan of the abdomen showing multiple hepatic lesions, consistent with metastatic disease.
Figure 3.
Figure 3. (a) High-grade neuroendocrine carcinoma invading beneath the anal squamous epithelium (arrow). (b) Positive immunohistochemical brown staining of tumor cell cytoplasm (chromogranin, × 400).