Polypoid mass in the common bile duct evaluated with EUS and with IDUS

(A) EUS image shows a polypoid mass in the distal common bile duct.

(B) For this patient, IDUS was performed to further characterize the polypoid mass.

EUS: endoscopic ultrasound; IDUS: intraductal ultrasound.

Courtesy of Michael J Levy, MD, Enrique Vazquez-Sequeiros, MD, and Maurits J Wiersema, MD.

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