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目的探讨急性胰腺炎(AP)扩散至盆外间隙的CT表现及其临床价值。方法分析87例AP患者螺旋CT表现,着重观察AP扩散至盆外间隙的CT表现特征。结果AP所致腹膜后间隙积液蔓延至盆外间隙的发生率为34·5%(30/87)。盆外间隙积液的CT表现主要有4种类型。若以AP扩散至盆外间隙作为判断重症AP的阳性标准,其敏感度47·6%(30/63),特异度100%(24/24),阳性预测值100%(30/30),阴性预测值42·1%(24/57),准确度62%(54/87)。结论急性胰腺炎所致的盆外间隙积液有4种表现形式,盆外间隙积液是判断急性重症胰腺炎简单而特异度高的指标。
Objective To investigate the CT findings and clinical value of acute pancreatitis (AP) spreading out of the pelvis. Methods The CT findings of 87 patients with AP were analyzed. The CT features of AP dissemination to the extracapsular space were observed. Results The incidence of AP-induced effusion of retroperitoneal space to the extra-pelvic space was 34.5% (30/87). There are four main types of CT manifestations of effusion outside the basin. The AP was diffused into the pelvic space as a positive criterion for the diagnosis of severe AP, the sensitivity was 47.6% (30/63), the specificity was 100% (24/24), the positive predictive value was 100% (30/30) The negative predictive value was 42.1% (24/57) and the accuracy was 62% (54/87). Conclusion There are 4 manifestations of effusions in the pelvic space caused by acute pancreatitis. The extrahepatic effusions are simple and highly specific indicators for judging severe acute pancreatitis.