EPIDERMOID CYST OF ACCESSORY SPLEEN AT THE TAIL OF THE PANCREAS-REPORT OF TWO CASES-

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  • 膵尾部副脾epidermoid cystの2例

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Abstract

A 67 and a 17-year-old women were diagnosed as having a cystic lesion at the tail of the pancreas by ultrasonography, CT, magnetic resonance imaging, endoscopic retrograde pancreatography, and angiography. Since a possibility of malignant disease could not be ruled out, a laparotomy was performed. Both lesions had no communication with the spleen. Histopathologic ally, both cysts in them were lined with stratified squamous epithelium, were not associated with appendages of the skin, and had splenic tissues at the lateral. So a diagnosis of epidermoid cyst arising in the accessory spleen at the pancreatic tail was made.<br> The spleen is the organ originated in mesoderm and lacks epithelial component that make cyst formation difficult, especially that in the accessory spleen. There have been few cases of epidermoid cyst of accessory spleen at the pancreatic tail that might pose problems of differential diagnosis. Here our recent experiences with two such cases are presented with a review of the literature. As for the origin of the lining cell of the cysts, it is inferred to be aberration of epithelium of the pancreatic duct to the accessory spleen at the pancreatic tail, because tissue of the pancreatic duct was confirmed in the pericystic fiberous tissue and communication with cystic epithelium was suggested.

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