title: Primary gastric Hodgkin's lymphoma expressing a B-Cell profile including Oct-2 and Bob-1 proteins.
abstract: Classic Hodgkin's lymphoma (cHL) most often involves lymph nodes, and gastric involvement is rare. Hodgkin's and Reed-Sternberg (H-RS) cells in cHL are known to often lack expression of several B-lineage markers, such as CD20, CD79a, Oct-2, and Bob-1. We present an extremely rare case of mixed-cellularity cHL in the stomach in which expression of these B-cells was detected immunohistochemically. The patient was an 83-year-old Japanese woman who developed a sensation of abdominal fullness and appetite loss. Endoscopic and abdominal computed tomography examinations revealed a gastric ulcer lesion and swelling of para-aortic lymph nodes, respectively. A subtotal gastrectomy was performed, and the histopathologic diagnosis was established as a typical cHL compatible with stomach origin. The patient underwent postoperative chemotherapy of 3 cycles of ABVD (doxorubicin, bleomycin, vinblastine, and dacarbazine) and has since been in complete remission. Immunohistochemically, the H-RS cells in the cHL were positive not only for CD30 but also for CD20, CD79a, Oct-2, and Bob-1, whereas they were negative for CD3, CD15, CD45, EMA, and ALK1. Our patient may have had an intermediate cHL disease overlapping that of non-Hodgkin's peripheral B-cell lymphoma, possibly reflecting derivation from germinal-center B-cells.
authors.affiliation: Department of Internal Medicine, Aiiku Hospital, Sapporo, Japan. q1600350@maple.ocn.ne.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Saito
authors.forename: Shinya
authors.initials: S
authors.lastname: Tanaka
authors.forename: Akio
authors.initials: A
authors.lastname: Mori
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Toyoshima
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Irie
authors.forename: Masanobu
authors.initials: M
authors.lastname: Morioka
mesh_terms: D000369:Aged, 80 and over; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage; D001402:B-Lymphocytes / Q000378:metabolism* / Q000473:pathology; D015415:Biomarkers / Q000378:metabolism; D001761:Bleomycin / Q000008:administration & dosage; D003606:Dacarbazine / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D005260:Female; D005743:Gastrectomy; D006689:Hodgkin Disease / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D050813:Octamer Transcription Factor-2 / Q000378:metabolism*; D012074:Remission Induction; D013274:Stomach Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000601:surgery; D015534:Trans-Activators / Q000378:metabolism*; D014747:Vinblastine / Q000008:administration & dosage
chemical_list: D015415:Biomarkers; D050813:Octamer Transcription Factor-2; C091546:POU2AF1 protein, human; D015534:Trans-Activators; D001761:Bleomycin; D014747:Vinblastine; D003606:Dacarbazine; D004317:Doxorubicin