Published online Jan 14, 2018. doi: 10.3748/wjg.v24.i2.297
Peer-review started: October 20, 2017
First decision: November 8, 2017
Revised: November 15, 2017
Accepted: November 22, 2017
Article in press: November 22, 2017
Published online: January 14, 2018
Mass forming chronic pancreatitis is very rare. Diagnosis could be done by the pathologic findings of focal inflammatory fibrosis without evidence of tumor in pancreas. A 34-year-old man presented with right upper abdominal pain for a few weeks and slightly elevated bilirubin level on clinical findings. Radiological findings of multidetector-row computed tomography, magnetic resonance (MR) imaging with MR cholangiopancreatography and endoscopic ultrasonography revealed focal branch pancreatic duct dilatation with surrounding delayed enhancing solid component at uncinate process and head of pancreas, suggesting branch duct type intraductal papillary mucinous neoplasm. Surgery was done and pathology revealed the focal chronic inflammation, fibrosis, and branch duct dilatation. Herein, I would like to report the first case report of mass forming chronic pancreatitis mimicking pancreatic cystic neoplasm.
Core tip: Extremely unusual radiological manifestation of mass forming chronic pancreatitis mimicking pancreatic cystic neoplasm is the first case report in the English-written medical literature.