title: Eradication of Helicobacter pylori infection did not lead to cure of duodenal mucosa-associated lymphoid tissue lymphoma.
abstract: Duodenal mucosa-associated lymphoid tissue (MALT) lymphoma is very rare, and little is known about its clinical course or association with Helicobacter pylori infection. This report describes the case of a 76-year-old man with a polypoid mass in the duodenal bulb, diagnosed as low-grade MALT lymphoma. H. pylori infection in the duodenal mucosa was confirmed by histology with silver stain. Endoscopic examination showed that the gross lesion regressed after the eradication of H. pylori despite its histopathologic persistence. Ten months later, however, cervical and intraperitoneal lymphadenopathy and bone marrow involvement was observed, and the pathologic diagnosis of the cervical lymph node was identical with that of the duodenal lesion.
authors: Dept. of Internal Medicine, Liver Research Institute and Pathology, Seoul National University College of Medicine, Korea.
authors: J S
authors: JS
authors: Kim
authors: H C
authors: HC
authors: Jung
authors: K H
authors: KH
authors: Shin
authors: I S
authors: IS
authors: Song
authors: C W
authors: CW
authors: Kim
authors: C Y
authors: CY
authors: Kim
mesh_terms: D000368:Aged; D004379:Duodenal Neoplasms / Q000150:complications* / Q000175:diagnosis; D004386:Duodenum / Q000382:microbiology / Q000473:pathology; D016481:Helicobacter Infections / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy; D016480:Helicobacter pylori; D006801:Humans; D007413:Intestinal Mucosa / Q000382:microbiology / Q000473:pathology; D018442:Lymphoma, B-Cell, Marginal Zone / Q000150:complications* / Q000175:diagnosis; D008297:Male