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. 2018 Oct 29;3:82. doi: 10.21037/tgh.2018.10.08

Table 1. Diagnostic and therapeutic applications of cholangioscopy.

Diagnostic applications
   Visualization and optically guided biopsies of:
      Indeterminate biliary strictures
      Dominant strictures in primary sclerosing cholangitis
      Intraductal papillary neoplasms
      Choledochal cysts
      Post-liver transplant ductal ischemia
      Intraductal spread of ampullary adenoma
   Evaluation of fixed filling defects noted on cholangiogram
   Differentiation of benign versus malignant intraductal mass
   Precise mapping of intraductal cholangiocarcinoma prior to resection
   Collection of fluid samples for cytology
   Tissue sampling and visual evaluation for infections:
      Cytomegalovirus
      Fungal infections
Therapeutic applications
   Stone fragmentation utilizing:
      Electrohydraulic lithotripsy (EHL)
      Laser lithotripsy (LL)
   Ablative therapies for ductal cancer:
      Radiofrequency ablation (RFA)
      Photodynamic therapy
      Nd-YAG laser ablation
      Argon plasma coagulation (APC)
   Cystic duct stent placement
   Guidewire passage through strictures
   Resection of ductal masses
   Retrieval of migrated ductal stents