title: [A case of H. pylori and API2-MALT1 gene-negative gastric mucosa-associated lymphoid tissue lymphoma with a carcinoma-like signet-ring cell lymphoepithelial lesion].
abstract: A 60-year-old woman presented in February 2003 with an ulcer on the lesser curvature of the anglus. The endoscopic biopsy specimens showed epithelial signet-ring cell associated with lymphoid infiltration, suggesting a diagnosis of gastric cancer. Histopathological examination confirmed the diagnosis of low-grade B-cell lymphoma of MALT with epithelial signet-ring cell lymphoepithelial lesion, which was negative for H. pylori and t (11;18) (q21;q21) translocation (API2-MALT1 gene). This case was treated with H. pylori eradication and additional radiation therapy, and the tumor was disappeared.
authors.affiliation: Department of Internal Medicine and Endoscopy, Hiroshima City Asa Hospital.
authors.forename: Tomonori
authors.initials: T
authors.lastname: Sumida
authors.forename: Shinji
authors.initials: S
authors.lastname: Nagata
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Ohgoshi
authors.forename: Yuki
authors.initials: Y
authors.lastname: Ishida
authors.forename: Takayasu
authors.initials: T
authors.lastname: Kuwabara
authors.forename: Takako
authors.initials: T
authors.lastname: Tsumura
authors.forename: Keiji
authors.initials: K
authors.lastname: Tsuji
authors.forename: Tohru
authors.initials: T
authors.lastname: Hidaka
authors.forename: Mayumi
authors.initials: M
authors.lastname: Kaneko
authors.forename: Tadashi
authors.initials: T
authors.lastname: Yoshino
mesh_terms: D018279:Carcinoma, Signet Ring Cell / Q000473:pathology* / Q000628:therapy; D005260:Female; D006801:Humans; D018442:Lymphoma, B-Cell, Marginal Zone; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000473:pathology* / Q000628:therapy