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TITLE:

COMPARATIVE ACCURACY OF MRCP AND ULTRASOUND IN EVALUATION OF OBSTRUCTIVE JAUNDICE

AUTHORS:

Dr. Danial Khalid, Dr. Hafiza Wajeeha Waheed, Dr. Saud Aabid

ABSTRACT:

Objective: To evaluate the diagnostic accuracy of ultrasound in obstructive jaundice taking MRCP as gold standard. Methods: This cross-sectional study was conducted at Services Hospital, Lahore from 2nd May 2018 till 2nd November 2018. Both male and female patients aged 30 to 80 years with suspected obstructive jaundice were included. Patients already diagnosed with obstructive jaundice were excluded. MRCP and ultrasound were performed in suspected patients. Diagnostic accuracy including sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of obstructive jaundice were calculated using contingency tables using MRCP findings as gold standard. Results: Mean age of the patients was 54.73 ± 12.65 years. In causes of obstruction, choledocholothiasis was responsible for 85 (35.1%), stricture 61 (25.2%), carcinoma of head of pancreas 39 (16.1%), periampullary carcinoma 21 (8.7%), cholangiocarcinoma 10 (4.1%) and gallbladder carcinoma 26 (10.7%) of the cases. Diagnostic accuracy of ultrasound in obstructive jaundice taking MRCP findings as gold standard showed sensitivity, specificity, positive predicted value (PPV), negative predicted value (NPV) and overall diagnostic accuracy as 84.57%, 79.10%, 91.36%, 66.25% and 83.06%. Conclusion: Ultrasound has a high sensitivity, moderate specificity, and high diagnostic accuracy in diagnosis of obstructive jaundice.

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