Obstruction of Bile ducts is the cause for obstructive jaundice . Dusts are evaluated radiologically through ultrasounds, CT, PTC, T tube cholangiogram, ERCP, MRCP. Filling defects in the bile ducts are usually read as stones. This study points to the fact that bile duct filling defects are not always stones and can have various pathologies. This study revolves around PTC , ERCP and T tube cholangiogram. This is a review article.
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