Abstract
Forceps biopsies of biliary stenoses are difficult to direct under fluoroscopy and for this reason may give spurious results. In addition, fluoroscopy does not prevent the electrohydraulic lithotripsy (EHL) probe from damaging the bile duct wall. Retrograde biliary endoscopy with the ultrathin endoscope (UTE) was tested in 12 patients to guide biopsies and in 6 patients to guide EHL. Results of biopsies were confirmed by surgery or the disease course in each of the 12 patients. Only one stone could not be fragmented and removed because the EHL probe could not be properly placed. The diagnosis of biliary stenosis may be markedly enhanced by using a UTE although at the risk of an endoscopic sphincterotomy and subsequent biliary infection. EHL with UTE is difficult and time consuming but further technical development may make it more practical immediately following sphincterotomy.
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