Case Report
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World J Gastroenterol. Mar 21, 2013; 19(11): 1850-1854
Published online Mar 21, 2013. doi: 10.3748/wjg.v19.i11.1850
Synchronous adenocarcinoma and extranodal natural killer/T-cell lymphoma of the colon: A case report and literature review
Chih-En Tseng, Ta-Wen Shu, Chih-Wen Lin, Kai-Sheng Liao
Chih-En Tseng, Kai-Sheng Liao, Department of Anatomic Pathology, Buddhist Dalin Tzu Chi General Hospital, Chiayi 62247, Taiwan
Chih-En Tseng, School of Medicine, Buddhist Tzu Chi University, Hualien 97004, Taiwan
Ta-Wen Shu, Department of General Surgery, Buddhist Dalin Tzu Chi General Hospital, Chiayi 62247, Taiwan
Chih-Wen Lin, Department of Medical Imaging, Buddhist Dalin Tzu Chi General Hospital, Chiayi 62247, Taiwan
Author contributions: Shu TW and Lin CW collected and interpreted the clinical data; Tseng CE and Liao KS wrote the paper.
Supported by The Buddhist Dalin Tzu-Chi General Hospital
Correspondence to: Kai-Sheng Liao, MD, Department of Anatomic Pathology, Buddhist Dalin Tzu Chi General Hospital, 2, Min-Sheng Road, Dalin, Chiayi 62247, Taiwan. carl.liao@gmail.com
Telephone: +886-5-2648000 Fax: +886-5-2648999
Received: December 17, 2012
Revised: January 20, 2013
Accepted: February 8, 2013
Published online: March 21, 2013
Processing time: 94 Days and 12.3 Hours
Abstract

Extranodal natural killer/T-cell lymphoma (ENKTL) is a distinct subtype of non-Hodgkin’s lymphoma and is rare in the colon. Synchronous adenocarcinoma and ENKTL of the colon has not been reported in the literature. In the present study, we report a 63-year-old male who suffered from intermittent bloody stools for 2 mo. He did not have fever, body weight loss or night sweat. Endoscopic and imaging studies revealed a 4.5-cm ulcerative mass in the ascending colon and a 3.0-cm polypoid, easy bleeding mass in the sigmoid colon, respectively. Thought to have double carcinoma of the colon, he received simultaneous right hemicolectomy and sigmoidectomy. The pathological diagnosis was a synchronous ENKTL (ascending colon) and adenocarcinoma (sigmoid colon). The literature on synchronous adenocarcinoma and malignant lymphoma of the colon was also reviewed.

Keywords: Synchronous cancers of the colon; Colonic adenocarcinoma; Colonic lymphoma; Extranodal natural killer/T-cell lymphoma; Epstein-Barr virus