Experimental: Patients with bile duct disease not eligible for endoscopic treatment

Before the procedure all patients will be submitted to US and/or CT and/or MRI and will be evaluated for hemoglobin, hematocrit and liver function tests. Patients with biliary tract disorders that are not eligible for endoscopic treatment and/or previous failed endoscopic treatment will be evaluated for inclusion in this study. Therefore, a case-by-case discussion will be conducted with the reference hepatologists/surgeons to assess treatment assignment. Once enrolled in the study, patients will undergo cholangioscopic-assisted treatment at the UOC addomino-pelvic diagnostic and interventional radiology unit of the Bologna University Hospital. After the procedure, patients will be required to perform a clinical laboratory monitoring in subsequent follow-up controls that will be performed 3-6-12-24-36 months after treatment. Additional imaging examinations (US, CT or MRI) will only be scheduled if symptoms recur.