Intrapancreatic gastric duplication cyst mimicking XXXX .

@entity1 @entity788 @entity5409 @entity417 @entity5 @entity2225 @entity5822
@entity5409 of the pancreas are sometimes difficult to diagnose. We report a case of a gastric duplication cyst (GDC) of the pancreas in an adult. A 45-year-old @entity1 was admitted to our department for the investigation of @entity417 . Abdominal ultrasonography revealed a large @entity5409 , measuring about 40  *  70  mm with calcification in the tail of the pancreas. Contrast-enhanced computed tomography of the abdomen revealed a non-enhanced @entity5409 with non-enhanced wall. Endoscopic retrograde pancreatography revealed a mild extended main pancreatic duct and an aberrant pancreatic duct, but there was no communication with the cyst. We could not deny the @entity5 , so distal pancreatectomy was performed. The pathological examination revealed that the inner wall of the cyst consisted of columnar epithelium and smooth muscle layer. Immunohistochemical analysis revealed the columnar epithelium to be immunopositive for @entity5822 ( @entity5822 ) and immunonegative for @entity2225 ( @entity2225 ) and the glands to be immunonegative for @entity5822 and immunopositive for @entity2225 . Therefore, a diagnosis of GDC of the pancreas was made. On imaging, a GDC usually mimics a @entity788 . Therefore, even though it is rare, a GDC should be considered in the differential diagnosis of @entity5 of the pancreas.
