Intraductal papillary neoplasm of the bile duct: two case reports and review of the literature

Background: Intraductal Papillary Neoplasm of the Bile Duct (IPNB) is a rare disease that is characterized by papillary lesions in the intra and extrahepatic biliary tree. Traditional imaging studies may show biliary dilation and/or filling defects. Endoscopic retrograde cholangiopancreatography can demonstrate diffuse bile duct dilatation as well as amorphous filling defects, however visualization of the biliary system can be limited by obstruction by the papillary lesions or mucin. Digital single operator cholangioscopy can be used to aid in diagnosis.Case Presentation: We report two elderly Caucasian males that presented with fatigue and obstructive jaundice. In both cases, the diagnosis of IPNB of was made. In one case, digital single operator cholangioscopy was used successfully to make the diagnosis.Conclusions: We present two cases of IPNB as well as a review of the clinical characteristics of IPNB and the utility of digital single operator cholangioscopy to aid in diagnosis. In IPNB, timely diagnosis is paramount. Traditional imaging studies can be inadequate, digital single operator cholangioscopy allows for quick diagnosis and, if indicated, further intervention.