[Temporary implantation of a metal stent in Vater's ampulla. Evaluation of early changes of the bile ducts in an animal study].
OBJECTIVE
Evaluation of temporary stent implantation in the papilla of vater and the subsequent alterations of the bile ducts in a controlled animal study.


METHODS
In seven domestic pigs the papilla of vater was stented with a nitinolelastalloy-strecker stent over a period of three days. The microscopic and macroscopic changes of the biliary tract and the serologic parameters were judged.


RESULTS
In three cases a slight widening of the peripheric bile ducts was found. With the exception of a mild elevation of lactate dehydrogenase the serological parameters remained normal. The explantation of the stent two possible in six cases. A thickening of the outer layers of the bile ducts and a low to middle grade injury of the mucosa were found histologically.


CONCLUSIONS
A temporary stent implantation in the papilla of vater is feasible. The mucosal injuries caused by the temporary stent placement may be fully repairable. The method seems to be suitable for prolonged dilatation of benign stenoses.
Rückforth
J F
JF
Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen.
von Wrede
K
K
Schürmann
K
K
Vorwerk
D
D
D000497:Alloys; D014670:Ampulla of Vater / Q000601:surgery*; D000818:Animals; D001652:Bile Ducts / Q000293:injuries / Q000473:pathology*; D007770:L-Lactate Dehydrogenase / Q000097:blood; D009092:Mucous Membrane / Q000473:pathology; D011474:Prosthesis Design; D015607:Stents; D013552:Swine
D000497:Alloys; D007770:L-Lactate Dehydrogenase
Passagere Implantation eines Metallstents in der Papilla Vateri. Beurteilung von Frühveränderungen an der Gallengangswand im Tiermodell.