Tumor seeding after endoscopic ultrasound-guided fine-needle aspiration of cancer in the body of the pancreas

Abstract

The use of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) has been rapidly expanding as a useful examination technique which enables highly accurate histological diagnosis. Reports of tumor dissemination induced by EUS-FNA are rare [1] [2] [3] [4] [5]. We recently encountered a case in which tumor cells were observed in the puncture line in a surgically resected specimen after EUS-FNA, and in which dissemination in the posterior wall of the upper gastric body was later observed.