title: Coaxial cancer dilator.
abstract: In cases in which the ureters or biliary tree is encased by large tumors, it may be difficult to dilate a pathway for a stent with a balloon catheter. In ten consecutive patients in whom balloon dilatation was unsuccessful, a coaxial tapered Teflon cancer dilator successfully crossed the obstruction.
mesh_terms: D001650:Bile Duct Neoplasms / Q000150:complications*; D002779:Cholestasis / Q000209:etiology / Q000628:therapy*; D004106:Dilatation / Q000295:instrumentation*; D006801:Humans; D014516:Ureteral Neoplasms / Q000150:complications*; D014517:Ureteral Obstruction / Q000209:etiology / Q000628:therapy*