What is Following is an exception to Courvoisier's law: and explain in detail?
Primary oriental cholangiohepatitis causing stones in the CBD Exceptions to Courvoisier's law: Double impaction - one stone in CBD and stone in cystic duct. Periampullary carcinoma in a patient who has undergone cholecystectomy. Primary oriental cholangiohepatitis causing stones in the CBD (gall bladder is normal in these cases).