All are true about pigmented stones except:
Ans. (b) Secondary CBD stonesRef: Sabiston 19/e p 1485-1486* Black pigmented stones are seen in hemolytic states.* Brown pigmented stones can form in the bile duct itself (Primary Bile duct stone)* MC stone in Asian People* Hepato lithiasis - the commonest stone is Earthy Brown Stones
Seen in cholangiohepatitis
Secondary CBD stones
Primary CBD stones
More common in Asians
Gall Bladder & Bile Ducts