Abdur Rahim Palwa, Uzma Nisar, Mobeen Shafique, Omer Aamir, Sidra Riaz, Aown Raza Shah Bukhari, Mehwish Razzaq.
The Accuracy of Transabdominal Ultrasound (TAUS) in Detection of Choledocholithiasis Keeping Magnetic Resonance Cholangiopancreatography (MRCP) as Gold Standard.
Pak Armed Forces Med J Jan ;72(2):485-89.

Objective: To assess the diagnostic accuracy of trans-abdominal ultrasound (TAUS) in detecting choledocholithiasis, keeping MRCP as the gold standard. Study Design: Cross-sectional study. Place and Duration of Study: Department of Magnetic Resonance Imaging, Armed Forces Institute of Radiology & Imaging, Pak Emirates Military Hospital,, Rawalpindi, Pakistan, from Jun 2018 to May 2019. Methodology: 102 patients of either gender, age 20-85 years with the clinical suspicion of choledocholithiasis and obstructive jaundice were included. Trans-abdominal ultrasonography was performed for radiological detection of disease. All selected cases then underwent MRCP for confirmation of findings. Results: Mean age of the patients was 54.27 ± 15.14 years. 47 patients (46.1%) were males, and 55 (53.9%) were females. All patients were subjected to trans-abdominal ultrasound and MRCP. TAUS showed choledocholithiasis in 82 (80.3%) patients. MRCP confirmed choledocholithiasis in 81 (79.4%) cases, whereas 21 (20.5%) revealed no choledocholithiasis. Overall sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of TAUS were 96%, 80.9%, 95%, 85% & 87.86%, respectively. Conclusion: Diagnostic accuracy of trans-abdominal ultrasonography in detecting choledocholithiasis is significantly high enough to be used as a first-line imaging modality as MRCP is available only in specialised care centres.

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