History: Adolescent male with abdominal swelling.
This is a pancreatic pseudocyst. A pancreatic pseudocyst is a fluid collection which is surrounded by a fibrous capsule. Pancreatic pseudocysts usually contain pancreatic enzymes, tissue, debris, and sometimes blood.
The differential diagnosis for this MRI appearance includes a pancreatic pseudocyst, mucinous cystic pancreatic tumor, pancreatic serous cystadenoma, and much less likely pancreatic intraductal papillary mucinous tumor which are usually multilobulated.
Up to 85% of pancreatic pseudocysts occur in the body and tail of the pancreas, and are usually complications of acute or chronic pancreatitis.
Read about this case of gallstone pancreatitis that developed a large intrapancreatic abscess, or walled off necrosis.