32例胃肠道淋巴瘤CT表现及误诊分析

CT features and analysis of misdiagnosis of 32 cases with gastrointastinal lymphoma

目的总结胃肠淋巴瘤的CT表现及误诊原因。方法回顾分析经病理证实的32例胃肠淋巴瘤的CT特征及其中15例的误诊原因。结果胃淋巴瘤18例,肠道淋巴瘤14例,均为非霍奇金氏淋巴瘤。病变多节段发生的19例,累及范围30～130(53.2±19.1)mm,伴有腹腔或肠系膜淋巴结肿大26例(81.3%),黏膜分层状强化7例(21.9%)。14例肠道淋巴瘤中,伴扩张及液平9例(64.3%),网膜、系膜受累6例(42.9%),动脉瘤样扩张4例(28.6%)。结论胃肠淋巴瘤与相应部位的恶性肿瘤容易混淆,掌握CT表现特征,可以减少误诊。

Objective To summarize the CT features of gastrointastinal lymphoma and the causes of misdiagnosis in 32 patients with gastrointastinal lymphoma. Methods CT imagings of 32 cases with gastrointastinal lymphomas proved by pathology were reviewed retrospectively. The causes of misdiagnosis in 25 cases were analyzed. Results Gastric lymphoma was diagnosed in 18 cases and intastinal lymphoma in 14 cases, who were all non-Hodgin＇s lymphomas （NHL）. Of 32 cases, the tumor located in multipositions of gastrointastinal tract in 19 cases, ranged from 30 to 130（53.2±19.1） mm, accompanied with enlarged cervical and mesareic lymph nodes in 26 （81.3%） cases, stratified enhanced in gastrointastinal wall in 7 （21.9%） cases. Of 14 intastinal lymphomas, dilating and ＂air-fluid level＂ sign were seen in 9 （64.3%） cases, omentum and mesentery infiltrated in 6 （42. 9 % ） cases, and distending asaneurysm sign in 4 （28. 6 % ） cases. Conclusion The gastrointastinal lymphomas were easily to be confused with corresponding regional malignant tumors. The misdiagnosis can be decreased by carefully analyzing the CT features.