原发性胃肠道淋巴瘤多层螺旋CT表现

目的探讨原发性胃肠道淋巴瘤的 CT 表现.资料与方法回顾性分析经手术病理证实的13例胃肠道淋巴瘤患者的多层螺旋 CT 表现及其病理特征.结果13例均为非霍奇金淋巴瘤,其中弥漫大 B 细胞淋巴瘤9例,黏膜相关边缘带 B 细胞淋巴瘤4例.胃部病变6例,其中累及全胃1例,胃窦2例,胃体1例,同时累及胃体及胃窦2例;小肠病变2例,其中空肠1例,回肠末端1例;结肠病变5例,其中回盲部2例,升结肠1例,乙状结肠1例,直肠1例.多层螺旋 CT 可见胃肠壁弥漫性增厚病灶伴管腔明显狭窄;病灶轻至中度增强;个别出现瘤样扩张征象及肠系膜和(或)腹膜后淋巴结肿大.结论多层螺旋CT 诊断原发性胃肠道淋巴瘤具有胃肠管壁弥漫性或局限性增厚;密度均匀,轻至中度均匀强化,轨道征、黏膜白线征及强化均匀等影像学特征,对胃肠道淋巴瘤具有一定的诊断价值.

Multi-slice Spiral CT Manifestations of Primary Gastrointestinal Lymphoma

Purpose To explore the imaging manifestations and its correlated pathology of primary gastrointestinal lymphoma. Materials and Methods Thirteen cases of primary gastrointestinal lymphoma proved by pathology were retrospectively analyzed. The multi-slice spiral CT imaging findings and pathology findings of primary gastrointestinal lymphoma were summarized. Results All 13 patients were confirmed to be non-Hodgkin lymphoma, 9 of them were diffuse large B-cell lymphoma, and 4 were marginal zone B cell lymphoma. The lesions located at the stomach in 6 cases, involving the whole stomach (n=1), the antrum of stomach (n=2), the body of the stomach (n=1), and both body and antrum of stomach (n=2). The lesions located at the intestinal in 2 cases, including jejunum (n=1) and ilium (n=1). 5 lesions located at the colorectal, including ileocecal junction (n=2), ascending colon (n=1), sigmoid (n=1) and rectum (n=1). Imaging findings were uneven thickening of gastrointestinal wall, narrowing and filling defect of gastrointestinal lumen with mild or moderate enhancement. Some cases showed tumor-like expansion and lymphadenopathy in abdominal cavity or retroperitoneal. Conclusion MSCT features of gastrointestinal lymphoma include thicken wall, homogeneous density, mild or moderate homogeneous enhancement, tramline sign, and mucosal white line, which are helpful for the diagnosis of gastrointestinal lymphoma.