title: Primary Isolated Extramedullary Plasmacytoma in the Colon.
abstract: Primary isolated extramedullary plasmacytoma is a rare tumor. Although it commonly involves nasopharynx or upper respiratory tract, only 10% of cases involves the gastrointestinal tract. Stomach and small intestine are the most commonly involved sites in the gastrointestinal tract. Primary isolated extramedullary plasmacytoma of colon is extremely rare. We report a case of 45-year-old man who presented with 1-year history of lower abdominal pain. Colonoscopy showed a colonic stricture about 50 cm from the anal verge. Colonoscopic biopsy showed lymphoid hyperplasia. On computed tomography, enhancing circumferential wall thickening and luminal narrowing with pericolic lymph node enlargement in the transverse colon was identified. Patient underwent extended left hemicolectomy. Histopathologic examination of resected colon identified an isolated primary colonic plasmacytoma of 1.7 cm in diameter with regional lymph node involvement (8/50 positive). To administer adequate treatment, further study about clinical features of primary isolated extramedullary plasmacytoma of colon is necessary.
authors: Department of Surgery, Kosin University College of Medicine, Busan, Korea.
authors: Seung-Hyun
authors: SH
authors: Lee
authors: Department of Surgery, Kosin University College of Medicine, Busan, Korea.
authors: Byung-Kwon
authors: BK
authors: Ahn
authors: Department of Surgery, Kosin University College of Medicine, Busan, Korea.
authors: Sung-Uhn
authors: SU
authors: Baek
authors: Department of Pathology, Kosin University College of Medicine, Busan, Korea.
authors: Hee-Kyung
authors: HK
authors: Chang
keywords: Colon; Plasmacytoma; Treatment