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A 70-year-old man with high-grade pancreatic intraepithelial neoplasia (a and b) MRCP, ERP showed pancreatic duct stenosis (arrow) and upstream dilation (arrow head). (c) EUS showed hypoechoic areas surrounding the stenosis (white circle). (e and f) Hematoxylin and eosin; magnification, ×12.5 and ×200, MRCP: Magnetic resonance cholangio pancreatography, ERP: Endoscopic retrograde pancreatography
