Endoscopic Ultrasound Through‐The‐Needle Biopsy Diagnosis of a Pancreatic Lymphoepithelial Cyst

Abstract

We performed an EUS‐TTNB (endoscopic ultrasound through‐the‐needle biopsy) in a 48‐year‐old man with an asymptomatic 4 cm pancreatic neck hypodense lesion, with inhomogeneous slight contrast enhancement. On T2‐weighted magnetic resonance imaging (MRI), the lesion appeared as a complex cystic lesion with internal septa, with positive contrast enhancement. Endoscopic ultrasound (EUS) showed a septate PCL (pancreatic cystic lesion) with granular internal aspect, lobulated contours, and no visible cystic walls or mural nodules.

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