Khadim Hussain Sial, Hizbullah Arain.
Correlation between operative findings and pre-operative Ultrasonographic findings in cases of Cholelithiasis.
Pak J Surg Jan ;20(2):66-70.

This prospective study was conducted in Surgical Unit V of Civil Hospital, Karachi from 1st April 2003 to 30th May 2004 on 70 patients to see the degree of correlation between operative findings and pre-operative ultrasound findings in patients with Cholelithiasis. Pre-operative ultrasound in gall stone disease showed a 92% accuracy when its findings were compared with operative findings. In 83.3% cases the ultrasound correctly predicted the thickness of the gall bladder wall. The yield of ultrasound for common bile duct stones was only 57%. Additional imaging methods such as plain X-ray abdomen and oral cholecystogram were carried out in some cases with relatively low diagnostic accuracy. Percutaneous transhepatic cholangiography had a 100% accuracy in common bile duct stones, but at the cost of being invasive and potentially hazardous procedure. Ultrasound is non invasive, cost effective, technically easy to perform and can be used as the sole diagnostic tool in gall bladder stones. It also gives useful information about structures around the gall bladder.

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