Utility of Endoscopic Retrograde Cholangiopancreatography in the Treatment of Intraductal Papillary Neoplasm of the Bile Duct.

Intraductal papillary neoplasm of the bile duct is a rare bile duct tumor that displays a range of cytoarchitectural atypia and is recognized as a precursor of invasive carcinoma. We present a 71-year-old woman with a recent diagnosis of lung adenocarcinoma, who presented with acute cholangitis secondary to an obstructive intraductal papillary neoplasm of the bile duct. The patient underwent endoscopic retrograde cholangiopancreatography, which identified the lesion, and on biliary sweep, the polyp presented externally and she underwent successful polypectomy with resolution of the infection.