Cystic lesion mimicking intraductal papillary mucinous tumor arising in heterotopic pancreas of the stomach and synchronous intraductal papillary mucinous adenocarcinoma of the pancreas.
This article presents the study of a 66-year-old man with an asymptomatic pancreatic mass detected incidentally 4 months earlier. A magnetic resonance imaging scan revealed 2 distinct cystic masses in the pancreas and the gastric antrum. Microscopically, the pancreatic lesion showed dilated cysts containing papillary structures lined by mucinous epithelium, which showed a loss of polarity, an increased nucleus-to-cytoplasm ratio, a prominent nucleolus, and high proliferation on immunostaining for Ki-67. The gastric lesion was composed of heterotopic pancreatic tissue surrounding a large dilated cyst that was lined with mucinous epithelium and contained a few intraluminal papillae.
Park
Ho Sung
HS
Department of Pathology, Institute for Medical Science, Chonbuk National Univerity Medical School, Jeonju, Korea.
Jang
Kyu Yun
KY
Kim
Young Kon
YK
Yu
Hee Chul
HC
Cho
Baik Hwan
BH
Moon
Woo Sung
WS
D002288:Adenocarcinoma, Mucinous / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D000368:Aged; D021441:Carcinoma, Pancreatic Ductal / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D049109:Cell Proliferation; D002828:Choristoma; D003937:Diagnosis, Differential; D018572:Disease-Free Survival; D005743:Gastrectomy; D006801:Humans; D019394:Ki-67 Antigen / Q000378:metabolism; D008279:Magnetic Resonance Imaging; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D010179:Pancreas; D010181:Pancreatic Cyst / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D010190:Pancreatic Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D016577:Pancreaticoduodenectomy; D013272:Stomach Diseases / Q000378:metabolism / Q000473:pathology* / Q000601:surgery
D019394:Ki-67 Antigen