title: Duodenal mantle cell lymphoma in a patient with advanced sigmoid adenocarcinoma.
abstract: While colorectal cancer is one of the most commonly encountered gastrointestinal malignancies, primary lymphoma is an uncommon neoplasm of the gastrointestinal tract. The duodenum is not a common location for the recurrence of colon cancer or of primary gastrointestinal lymphoma. Studies regarding mantle cell lymphoma (MCL) as a secondary synchronous or metachronous malignancy are limited. Here we report a patient who received concurrent chemoradiotherapy for his advanced sigmoid adenocarcinoma and developed MCL in the duodenal bulb 20 months later. Suspected lesions should be biopsied and examined for a secondary neoplasm, especially when they appear in an uncommon location for metastasis or direct invasion.
authors.affiliation: Department of Pediatrics, Taoyuan Armed Forces General Hospital, Taiwan.
authors.forename: Min-Tser
authors.initials: MT
authors.lastname: Liao
authors.forename: Ming-Fang
authors.initials: MF
authors.lastname: Cheng
authors.forename: Wei-Chou
authors.initials: WC
authors.lastname: Chang
authors.forename: Ya-Chieh
authors.initials: YC
authors.lastname: Wu
authors.forename: Herng-Sheng
authors.initials: HS
authors.lastname: Lee
authors.forename: Shih-Hung
authors.initials: SH
authors.lastname: Tsai
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis* / Q000473:pathology; D000368:Aged; D012809:Colon, Sigmoid / Q000473:pathology*; D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D003287:Contrast Media; D003937:Diagnosis, Differential; D004386:Duodenum / Q000473:pathology*; D017809:Fatal Outcome; D006801:Humans; D020522:Lymphoma, Mantle-Cell / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy; D008297:Male; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media