title: A false-negative LeVeen shunt study.
abstract: Previous reports have indicated an accuracy of nearly 100% for LeVeen shunt studies. A case is presented that fulfills the criteria for proper function, but the LeVeen shunt tube was poorly functioning with its tip partially extravascular.
mesh_terms: D005188:False Negative Reactions; D006083:Graft Occlusion, Vascular / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010536:Peritoneovenous Shunt; D011877:Radionuclide Imaging; D013671:Technetium Tc 99m Sulfur Colloid; D014656:Vascular Surgical Procedures
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid