Abstract
and the pelvis demonstrated no specific findings. At colonoscopy, the ileocecal valve showed an ulcerated growth extending to adjacent cecal wall. This growth showed multiple, irregular, marginated shallow ulcerations (A and B). The histopathology of the biopsied tissue from the ileocecal growth revealed a proliferation of large, atypical lymphoid cells with ovoid vesicular nuclei and prominent nucleoli (C; H&E, orig. mag. !400). Immunohistochemistrywas positive for CD20 andnegative for CD3. Examination of a peripheral blood smear and bone marrow biopsy specimen revealed no specific findings. A diagnosis was made of malignant lymphoma, diffuse, large, B-cell type. The patient underwent resection of the tumor and adjuvant chemotherapy. Hae Jung Song, MD Bong Min Ko, MD Young Koog Cheon, MD Chang Beom Ryu, MD Joon Seong Lee, MD Moon Sung Lee, MD Chan Sup Shim, MD Institute for Digestive Research Digestive Disease Center Soon Chun Hyang University College of Medicine Seoul, Korea
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