Intramural ureteric injury due to acute dilatation.
The effect of balloon dilatation of the ureteric orifice and the intramural ureter was evaluated histologically and radiologically in eight piglets. The distal part of the ureter was dilated from its normal calibre of 4F to 12F. Four weeks after the procedure obvious histological signs due to the preceding dilatation were seen in seven of the eight ureters. In simultaneous radiological studies two ureters showed massive and one slight dilatation and two ureters showed vesicoureteral reflux. The results suggest cautious use of dilatation. Small calibre ureterscopes without ureteric dilatation should be preferred.
Lindell
O
O
Urological Clinic, University Central Hospital, Helsinki, Finland.
Mäkinen
J
J
Salo
J
J
Pitkäranta
P
P
Lehtonen
T
T
D000818:Animals; D004106:Dilatation / Q000295:instrumentation; D019723:Endoscopes; D004848:Epithelium / Q000473:pathology; D005260:Female; D005355:Fibrosis; D013552:Swine; D014513:Ureter / Q000293:injuries* / Q000473:pathology; D014517:Ureteral Obstruction / Q000473:pathology; D014718:Vesico-Ureteral Reflux / Q000473:pathology