Uncommon lymphoepithelial cyst with sebaceous glands of the pancreas.
BACKGROUND
Lymphoepithelial cysts with sebaceous glands of the pancreas are extremely rare, with only 7 cases, including this case, published in English literature.


METHODS
We herein present the case of a 67-year-old Asian man who underwent a resection of a lymphoepithelial cyst of the pancreas during the follow up care for lung cancer. Fourteen years previously he underwent a right lower lobectomy at the right segment nine for lung cancer. A 20 mm mass in the body of the pancreas was identified by CT scan 4 years ago, and the diagnosis was intraductal papillary mucinous neoplasm (IPMN) at that time. Over a 5-year period, this mass grew to 42 mm without dilatation of the main pancreatic duct. The preoperative evaluation, including endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA), indicated a cystic neoplasm with suspicion of malignancy. Intraoperative frozen section revealed a squamous-lined cyst accompanied by sebaceous glands without any malignant findings. Following this pathological finding, resection of the cyst was performed. Consequently, microscopic examination revealed that it was a lymphoepithelial cyst with sebaceous glands of the pancreas.


CONCLUSIONS
Pancreatic lymphoepithelial cysts can be cured by conservative resection, but if they are asymptomatic and are diagnosed before surgery, no treatment is necessary. To our knowledge, this is the first ever published case of a lymphoepithelial cyst with sebaceous glands of the pancreas, which was found during the follow up care for lung cancer.
Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine. Kamigyo-ku, Kyoto, Japan. tsukasa@koto.kpu-m.ac.jp.
Tsukasa
T
Nakamura
Yoshio
Y
Osaka
Shoichi
S
Ishikawa
Hirotaka
H
Sako
Naoaki
N
Akamatsu
Yoshihiro
Y
Yamamoto
Yohei
Y
Hosokawa
Norio
N
Yoshimura
D003937:Diagnosis, Differential; D061765:Endoscopic Ultrasound-Guided Fine Needle Aspiration; D004848:Epithelium / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000601:surgery; D008221:Lymphoid Tissue / Q000473:pathology; D008297:Male; D010179:Pancreas / Q000473:pathology*; D010181:Pancreatic Cyst / Q000175:diagnosis* / Q000601:surgery; D012627:Sebaceous Glands / Q000473:pathology*; D014057:Tomography, X-Ray Computed