Changes

**'''Choleliths''' ('gall stones') are much less common in animals than they are in humans.  They are usually composed of bilirubin salts in dogs and calcium carbonate in cats, although they are very rare in the latter species.

**'''Choleliths''' ('gall stones') are much less common in animals than they are in humans.  They are usually composed of bilirubin salts in dogs and calcium carbonate in cats, although they are very rare in the latter species.

**'''Gall bladder mucocoeles''' produce a kiwi sign on radiographs and may be a sequel to cystic mucinous hyperplasia of the gall bladder mucosa.

**'''Gall bladder mucocoeles''' produce a kiwi sign on radiographs and may be a sequel to cystic mucinous hyperplasia of the gall bladder mucosa.

**'''Biliary neoplasia''', most commonly cholangiocellular adenoma (in cats) or carcinoma (in dogs).

**'''Biliary neoplasia''', most commonly cholangiocellular cystadenoma (in cats) or carcinoma (in dogs).

*'''Extraluminal obstructions''':

*'''Extraluminal obstructions''':

**'''Pancreatitis''', '''pancreatic abcess''' or '''neoplasm'''

**'''Pancreatitis''', '''pancreatic abcess''' or '''neoplasm'''