2a). Under EUS guidance, insertion of a needle knife or a 19-gauge needle transduodenally into the bile duct. After removal of a stylet, bile aspiration and injection of contrast medium into the ...
Endoscopic ultrasound-guided fine needle aspiration biopsy (EUS-FNA) is currently performed on a routine basis at many endoscopic centers and it is evident that this procedure has a major impact ...
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