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首页> 美国卫生研究院文献>Clinical Endoscopy >A Case of Mucosa-Associated Lymphoid Tissue Lymphoma of the Sigmoid Colon Presenting as a Semipedunculated Polyp
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A Case of Mucosa-Associated Lymphoid Tissue Lymphoma of the Sigmoid Colon Presenting as a Semipedunculated Polyp

机译：乙状结肠黏膜相关淋巴组织淋巴瘤呈半带蒂息肉一例

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Mucosa-associated lymphoid tissue (MALT) lymphomas are characterized by lymphoepithelial lesions pathologically. Colonic MALT lymphomas are relatively rarer than lymphomas of the stomach or small intestine. Endoscopically, colonic MALT lymphoma frequently appears as a nonpedunculated protruding polypoid mass and/or an ulceration in the cecum and/or rectum. We report a unique case of a colonic MALT lymphoma presenting as a semipedunculated polyp. A 54-year-old man was found to have a 2-cm semipedunculated polyp in the sigmoid colon during screening colonoscopy. The polyp was removed by endoscopic mucosal resection. Histologic examination of the resected polyp revealed diffuse epithelial infiltration by discrete aggregates of lymphoma cells. We diagnosed the tumor as low-grade B-cell MALT lymphoma by immunohistochemical staining.
机译：黏膜相关淋巴样组织（MALT）淋巴瘤的病理特征是淋巴上皮病变。结肠MALT淋巴瘤比胃或小肠淋巴瘤相对稀少。内窥镜检查发现，结肠MALT淋巴瘤通常表现为盲肠突出的息肉样肿块和/或盲肠和/或直肠溃疡。我们报告了结肠半生息肉的结肠MALT淋巴瘤的独特案例。在筛查结肠镜检查时，发现一名54岁的男子在乙状结肠中有2厘米半带蒂息肉。通过内窥镜黏膜切除术去除息肉。切除息肉的组织学检查显示淋巴瘤细胞离散聚集体弥漫性上皮浸润。我们通过免疫组织化学染色诊断为低度B细胞MALT淋巴瘤。

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