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Early Malignant Lymphoma Mimicking Type Ⅱa+Ⅱc Early Cancer of the Ascending Colon, Reort of a Case Hideya Kida 1 , Hitoshi Yoshimura 2 , Toshio Iida 1 , Yoshikazu Akasaka 1 , Takashi Yano 1 1Department of Surgery, Saiseikai Matsusaka Hospital 2Department of Laboratry Medicine, Mie University School of Medicine Keyword: 上行結腸 , 早期悪性リンパ腫 , Ⅱa+Ⅱc pp.717-723
Published Date 1993/6/25
DOI https://doi.org/10.11477/mf.1403106199
  • Abstract
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 A 49-year-old man was admitted to our hospital for further evaluation of positive fecal occult blood noted an annual health check-up. Barium enema showed an elevated lesion in the ascending colon. Colonoscopic examination demonstrated a type Ⅱa+Ⅱc-like lesion, whose biopsy specimen revealed malignant lymphoma. Neither lymphadenopathy of the entire body nor hepatosplenomegaly was detected by physical examination and imaging studies. A tentative diagnosis of primary malignant lymphoma of the ascending colon was made and the right hemicolectomy was performed. The resected specimen showed a type Ⅱa+Ⅱc-like lesion, 15×12 mm in size. Histochemical examination revealed non-Hodgkin's lymphoma, diffuse medium-sized cell type. The tumor invasion was limited within the mucosal and submucosal layers. There was no metastatic lesion in the resected lymph nodes. Immunohistochemically, the surface of most tumor cells was positively stained with monoclonal antibody against CD 21, IgM and. λ. These results confirmed the diagnosis of primary malignant lymphoma of the ascending colon, originating from B cell. No chemotherapy was given. The patient has been doing well in the 11 months since operation without sign of recurrence.


Copyright © 1993, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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