梗阻性黄疸是由于肝内毛细胆管、小胆管、肝胆管、肝总管、胆总管的机械性梗阻所致。因梗阻部位不同。可分为肝外黄疸和肝内黄疸,前者常需手术治疗,故又称为外科黄疸。本文着重讨论外科黄疸的术前诊断问题。 1 影像学检查 B型超声检查:肝内外胆管有无扩张、胆囊是否增大,是鉴别内科黄疸或外科黄疸的最重要依据。B型超声是诊断梗阻性黄疸的首选方法。其特点是准确性高, Obstructive jaundice is due to intrahepatic capillary bile duct, small bile duct, hepatobiliary, hepatic duct, common bile duct due to mechanical obstruction. Due to different parts of the obstruction. Can be divided into extrahepatic jaundice and intrahepatic jaundice, the former often require surgical treatment, it is also known as surgical jaundice. This article focuses on the preoperative diagnosis of surgical jaundice. 1 imaging examination B-mode ultrasound: whether the expansion of intrahepatic bile duct, gallbladder is increased, is to identify jaundice or surgical jaundice the most important basis. B-mode ultrasound is the preferred method of diagnosis of obstructive jaundice. It is characterized by high accuracy,