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Surgical Case Reports

, 2:98

First Online: 15 September 2016Received: 10 August 2016Accepted: 13 September 2016

Abstract

BackgroundLymphoepithelial cyst LEC of the pancreas is a rare benign tumor. LEC with sebaceous glands of the pancreas is extremely rare, and its histogenesis remains unclear.

Case presentationWe present a 66-year-old man with an incidental finding of a cystic lesion at the neck of the pancreas. Pancreatic juice cytology results and elevated serum carbohydrate antigen 19-9 and Dupan-2 levels indicated that the cyst was a potential adenocarcinoma. Therefore, a pancreaticoduodenectomy was performed. Macroscopically, the tumor was a unilocular cyst with a thin transparent wall, filled with soft yellow material. Pathological findings showed that the cyst was lined with squamous epithelium, accompanied by dense lymphoid tissue with scattered germinal centers. There were no hair follicles, but sebaceous glands were present in the lymphoid tissue just beneath the squamous epithelium. Therefore, the histopathological diagnosis was an LEC with sebaceous glands of the pancreas. Furthermore, the squamous epithelium surrounding the cyst was pathologically continuous with the tubular structure, indicating that the tubular structure transitioned into the squamous epithelium.

ConclusionsWe report an extremely rare case of LEC with sebaceous glands of the pancreas. Moreover, the pathological findings, which showed that the tubular structure transitioned into the squamous epithelium, suggested that this was squamous metaplasia. In order to investigate the histogenesis of LEC of the pancreas, the pathological findings must be evaluated.

KeywordsLymphoepithelial cyst Sebaceous gland Histogenesis AbbreviationsCA19-9Carbohydrate antigen 19-9

CTComputed tomography

FNAFine-needle aspiration biopsy

LECLymphoepithelial cyst

MRIMagnetic resonance imaging.

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Autor: Hiromitsu Maehira - Hisanori Shiomi - Koichiro Murakami - Hiroya Akabori - Shigeyuki Naka - Mitsuaki Ishida - Masaji Tani

Fuente: https://link.springer.com/article/10.1186/s40792-016-0228-4



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