A CASE OF LYMPHOEPITHELIAL CYST OF THE PANCREAS ACCOMPANIED WITH ABSCESS DUE TO DIAGNOSTIC ENDOSCOPIC ULTRASOUND-GUIDED FINE NEEDLE ASPIRATION

Abstract

A 55-year-old male was referred to our hospital due to chronic upper left abdominal pain. A blood test showed an elevated level of CA19-9. Abdominal CT revealed a 60mm tumor near the tail of the pancreas. Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) was performed but a definitive diagnosis was not established. Ten days after EUS-FNA, he was admitted to our hospital with an infection and rupture of the tumor. Based on a diagnosis of tumor perforation and surrounding abscess, percutaneous drainage was performed. Surgery was also performed to rule out malignancy. Pathological examination of the resected specimen revealed lymphoepithelial cyst of the pancreas. This report describes the adverse events of EUS-FNA in patients with cystic lesions of the pancreas.