UNASSIGNED: Lymphoepithelial cysts of the pancreas are a type of true cyst that can mimic pseudocysts and @entity5 . They are very rare, non-malignant lesions that are unilocular or multilocular cystic lesions lined predominantly by mature squamous epithelium and surrounded by non-neoplastic lymphoid elements. We, herein, present a @entity1 with a @entity5 mimicking a @entity5 . The @entity1 was admitted with upper abdominal discomfort. Computed tomography showed a 64*39 mm @entity3928 in the pancreas tail. She underwent distal pancreatectomy and splenectomy. In the fluid analysis of the pancreas @entity3928 , the @entity787 and CA19-9 were 618 ng/ml and 3.9 U/ml, respectively. The resected pancreas specimen showed a 6.5 cm-sized cyst the pancreas tail. The cyst was well circumscribed and multilocular. The final pathology report of the resected pancreas specimen noted that the cyst was multilocular, and the cyst lining was showing stratified squamous epithelium covering the lymphoid tissue (containing lymphoid follicles), which was consistent with a @entity45 . The @entity1 recovered uneventfully from surgery and has been doing well for the past 3 months. A differential diagnosis of cystic @entity660 is important. We suggest that lymphoepithelial cysts, although very rare, may be included in the differential diagnosis of cystic @entity788 .

XXXX mimicking @entity5 : report of a case.

@entity1 :: ('9606', 'Species') :: ['patient'] @entity788 :: ('MESH:D010190', 'Disease') :: ['pancreatic tumors'] @entity5 :: ('MESH:D009369', 'Disease') :: ['cystic neoplasms', 'cystic pancreas tumor', 'malignant cystic neoplasm'] @entity3928 :: ('MESH:C536030', 'Disease') :: ['cystic mass'] @entity660 :: ('MESH:D010182', 'Disease') :: ['pancreatic lesions'] @entity787 :: ('1084', 'Gene') :: ['CEA'] @entity45 :: ('MESH:D010181', 'Disease') :: ['lymphoepithelial cyst']
@entity45 :: (MESH:D010181,Disease) :: ['Lymphoepithelial cyst of the pancreas']
