ارزش تشخيصي CT اسكن در علل يرقان انسدادي

Diagnostic value of CT scan in Obstructive Jaundice

Background and Purpose: The diagnosis of obstructive jaundice entails the rapid examination of the patient for the causes and following a treatment protocol. Imaging is one of the most useful diasnostic methods, ultrasonography and CT scan being the most common. Despite the advautages of ultra sonography, CT scanning has been popularized due to diagnostic limitations of the latter. Therefore, this study investigates the diagnostic value of CT scanning. Methods and Materials: 23 patient with obstructive jaundice under went CT scan, the results of which were compared with postoperative biopsies and its sesitivity was calculated. Results: 52.2% of the patients were mule and the rest female; their auerage age was 58±19.4years. The most common causes reported in CT scan were Liver metastasis , pancreatic mass, Choledocal stone hydatic cyst, cholangiocarcinoma, gall bladder stone , Cirrhosis and stricture in distal choledoc. The CT sensitivity of all patients was 63.6%.It was 66.7% for Choledocal stone , 71.4% for pancreatic mass and 100% for liver metastasis. Conclusion: CT scan is an effective method of high sensitivity for diagnosing the level of obstruction in jaundice. Also, it is of high diagnostic accuracy for viewing the liver structure and if performed with IV contrast, it wilt be of valuable help in distinguishing between vascular structures from bile ducts.