Biliary Papillomatosis and New Ultrasound Imaging Modalities

Abstract

Biliary papillomatosis (BP) is a rare disorder of the biliary tract with a significant risk of malignant transformation and a high recurrence rate after operation due to the diffuse distribution of the disease. Preoperative diagnosis is difficult also by reason of the low sensitivity and specificity of conventional ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI), endoscopic retrograde cholangiography (ERC) and positron emission tomography (PET). Therefore, the introduction of new diagnostic imaging methods is of importance to improve the preoperative diagnosis of this originally as benign described disease which is reflected in the term of "benign papillomatosis of the biliary tree". The present review summarizes the literature and discusses new sonographic imaging techniques including contrast-enhanced ultrasound (CEUS), contrast-enhanced low mechanical endoscopic ultrasound (CELMI-EUS) and endoscopic ultrasound elastography.

Ascariasis imaging: pictorial essay

“…The worms can be extracted endoscopically [48]. Other rare bile duct diseases have to be ruled out (e. g., fasciolosis or papillomatosis) [49]. Ascariasis in the biliary tract can have any of the following imaging features on ultrasound [50]: 1.…”

Die Anwendung kontrastmittelverstärkter Techniken in der Endosonografie

“…Papillennahe Tumoren bieten in der Regel keine diagnostische Schwierigkeit für die Endosonografie. Gelegentlich kann Steinoder Sludgematerial nicht eindeutig von Tumoren abgegrenzt werden [20]. Dies liegt insbesondere daran, dass typischerweise intraduktale Konkremente keine komplette Schallreflexion aufweisen, sondern als echogene Raumforderungen imponieren.…”

EFSUMB Guidelines 2011: Comments and Illustrations

“…The role of CEUS in patients with Klatskin tumors is underestimated in our view but convincing data have not yet been published. Promising findings have been observed in extrahepatic cholangiocarcinoma and billiary papillomatosis [65], e. g., determining the depth of wall infiltration and surrounding tissue mainly using contrast-enhanced endoscopic US but lesions can be also detected by transabdominal ultrasound ( • " Fig. 14).…”