Gastrointestinal Pathology - Case 2 - Part 4
   

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A full autopsy was performed.

The abdominal cavity contained 500 mL of serous ascites. A large pseudocyst filled with brown fluid had formed within the omental bursa (and was not drained) and below that, another pseudocyst was found which contained necrotic pancreatic debris. The later was drained by a pig-tail catheter. The other catheter drained the left paracolic gutter. Only a small portion of pancreatic head could be grossly identified and this was mostly replaced by hemorrhage. Two stones lay in the common hepatic duct and three more were in the gallbladder.

 
The specimen shows a large retro gastric cystic space:
 

A second space is found near the tail of the pancreas, this was an area that had been drained.
Microscopic images of the pseudocyst wall show no true lining and many inflammatory cells.
 
 

The Gall bladder shows cholesterolosis and there were stones found in the cystic duct at the time of autopsy.
Microscopic of cholesterolosis of the gall bladder.
1. What was the cause of the pseudocyst?