目的评价64层CT对胃癌、淋 巴瘤、恶性间质瘤的鉴别诊断价值。方 法 回顾分析并比较36例经手术病理证实 的胃恶性肿瘤患者CT影像表现，其中胃 癌、淋巴瘤、恶性间质瘤各12例，分析 各自特异性影像表现。结果 胃癌黏膜浸 润较淋巴瘤及恶性间质瘤多，恶性间质 瘤肿瘤直径较大，淋巴瘤呈轻度强化， 而胃癌及恶性间质瘤呈均匀或不均匀明 显强化，淋巴瘤腹腔肿大淋巴结最多， 胃癌次之，恶性间质瘤最少。结论 64层 CT对胃癌、淋巴瘤、恶性间质瘤鉴别诊 断有较高的价值。

Objective To evaluate the differential diagnosis value of gastric cancer, gastric lymphoma, gastric malignant stromal tumor by 64-slice spiral CT. Methods A total of36 patients with malignant gastric tumor which confirmed by operation and pathology including 12 cases of gastric cancer, 12 cases of lymphoma, 12 cases of malignant stromal tumor were analyzed retrospectively in order to explore their own specific image representation. Results Gastric mucosal infiltration is more than lymphoma and malignant stromal tumor., malignant stromal tumors were larger in diameter, lymphomas showed mild enhancement, while gastric cancer and malignant stromal tumors showed homogeneous or heterogeneous enhancement. The lymphomas of the abdominal cavity were the largest, followed by gastric cancer and the least of malignant stromal tumors.. Conclusion The 64 slice CT is of high value in the differential diagnosis of gastric cancer, lymphoma and malignant stromal tumors.