中文摘要：

目的探讨系统性红斑很疮（SLE）并发胃肠血管炎的腹部CT表现。方法收集36例经临床证实的SLE并发胃肠血管炎的腹部CT资料，对其CT表现进行回顾性分析。结果36例中20例（56％）有肠壁增厚、水肿；11例（31％）增强后呈现“靶征”现象，呈外层高密度，中间低密度，内层亦为高密度。18例（50％）有肠系膜血管增多，重建后呈现为“梳征”；系膜脂肪间隙模糊的有15例（44％）。21例（58％）伴有腹盆腔积液。11例（31％）出现肾盂、输尿管积水、扩张。结论腹部CT对SLE并发胃肠血管炎有较高诊断价值，对其诊断及鉴别有重要意义。

英文摘要：

Objective To study the abdominal CT features of systemic lupus erythematosus（SLE） complicated by gastrointestinal vasculitis. Methods 36 cases with SI.E complicated by gastrointestinal vasculitis confirmed by clinic were collected and CT features were analyzed retrospectively. Results Abdominal CT features of SLE complicated by gastrointestinal vasculitis included intestinal wall thickening and edema in 20 cases（56 %） and increase of mesenteric vessels in 18 cases（50%）. Target sign（31%） and comb sign （44%） could be shown on enhanced images and reconstruction images. Dilatation of renal pelvis and ureter were seen in 11 cases （31%）. Abdominal and pelvic effusion presented in 21 cases（58% ）. Conclusion Abdominal CT has significant diagnostic value for SLE complicated by gastrointestinal vasculitis,it should be as conventional imaging examination in patients with this disease.