title: Synchronous adenocarcinoma and extranodal natural killer/T-cell lymphoma of the colon: a case report and literature review.
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.
authors.affiliation: Department of Anatomic Pathology, Buddhist Dalin Tzu Chi General Hospital, Chiayi 62247, Taiwan.
authors.forename: Chih-En
authors.initials: CE
authors.lastname: Tseng
authors.forename: Ta-Wen
authors.initials: TW
authors.lastname: Shu
authors.forename: Chih-Wen
authors.initials: CW
authors.lastname: Lin
authors.forename: Kai-Sheng
authors.initials: KS
authors.lastname: Liao
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D001706:Biopsy; D017024:Chemotherapy, Adjuvant; D003082:Colectomy; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003113:Colonoscopy; D017809:Fatal Outcome; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary; D054391:Lymphoma, Extranodal NK-T-Cell / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D012811:Sigmoid Neoplasms / Q000473:pathology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
keywords: Colonic adenocarcinoma; Colonic lymphoma; Epstein-Barr virus; Extranodal natural killer/T-cell lymphoma; Synchronous cancers of the colon
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