Abstract
A 69-year-old male was admitted to our hospital for examination of pancreatic tumor. Laboratory tests were normal except for an elevated CA19-9 level. Several images demonstrated a mass lesion measuring approximately 5cm in diameter in the pancreatic body. We preoperatively diagnosed pancreatic lymphoepithelial cyst (LEC), because the patient was male with an elevated CA19-9 level and multilocular cysts that included keratinous debris. The patient underwent enucleation of the tumor. Pancreatic LEC is a comparatively rare disorder, and most tumors are surgically removed without preoperative diagnosis. Pancreatic LEC without symptoms is discovered during follow-up for other conditions. For the diagnosis of pancreatic cystic disease, it is important to consider not only the shape but also the gender and contents of the cyst.
