Baron R L, Stanley R J, Lee J K, Koehler R E, Levitt R G
AJR Am J Roentgenol. 1983 Jun;140(6):1173-8. doi: 10.2214/ajr.140.6.1173.
A retrospective review of CT scans in 69 consecutive patients with proven biliary obstruction due to both malignant and benign causes was performed to define and differentiate CT changes. Abrupt termination of a dilated extrahepatic biliary duct was characteristic of a malignant process in the absence of a mass. Gradual tapering of a dilated duct was specific for benign disease. Other findings, such as degree of intra- or extrahepatic duct dilatation and presence or absence of a dilated pancreatic duct were not reliable in distinguishing benign from malignant causes. The authors also found CT to be accurate in detecting common duct stones with a sensitivity exceeding 80%.
对69例经证实因恶性和良性病因导致胆道梗阻的连续患者的CT扫描进行回顾性分析，以明确和区分CT表现。在无肿块的情况下，扩张的肝外胆管突然中断是恶性病变的特征。扩张胆管逐渐变细是良性疾病的特征。其他表现，如肝内或肝外胆管扩张程度以及胰管是否扩张，在区分良性和恶性病因方面并不可靠。作者还发现CT在检测胆总管结石方面准确率较高，敏感性超过80%。
