Primary adenomyomatosis of the choledochus as a rare cause of obstructive jaundice

A 75-year-old man was hospitalized with marked signs of extrahepatic obstructive jaundice. On the basis of morphological criteria the uncommon diagnosis of primary adenomyosis of the common bile duct was made using sonography and established histologically after endoscopic sphincterotomy. The symptoms were therefore promptly to be controlled. Primary adenomyosis should be considered in the differential diagnosis of any aetiologically unexplained extrahepatic cholestasis.