Changes

*'''Intraluminal obstructions''':

*'''Intraluminal obstructions''':

**'''[[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 mucoceles''' 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 cystadenoma (in cats) or carcinoma (in dogs).

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

**Aberrent migration of '''intestinal parasites''', including ''[[Ascaris suum]]'' in pigs and ''[[Parascaris equorum]]'' in horses.  This occur particularly when worms have been treated with an anthelmintic that causes spasticity of the muscles.

**Aberrant migration of '''intestinal parasites''', including ''[[Ascaris suum]]'' in pigs and ''[[Parascaris equorum]]'' in horses.  This occur particularly when worms have been treated with an anthelmintic that causes spasticity of the muscles.

*'''Extraluminal obstructions''':

*'''Extraluminal obstructions''':

**[[Pancreatitis|'''Pancreatitis''']], '''pancreatic abscess''' or '''neoplasm'''

**[[Pancreatitis|'''Pancreatitis''']], '''pancreatic abscess''' or '''neoplasm'''