[Microsurgery of the kidney pelvis].

In an animal experiment, excellent results were obtained using both microsurgical mucosa and all-layer, single-knot polyglactin (8/0 Vicryl) suture of the ureter. These results motivated clinical use of this microsurgical operative technique on five infants (4-9 months of age) with stenosis of the pelvis outlet. Both the microsurgical and suture techniques are equally suitable for plastic surgery of the renal pelvis, particularly with small anatomical conditions. However, all-layer suture carried out with magnifying lenses seems to be the simpler method, as the 8/0 Vicryl suture used becomes completely epithelialized intraluminally within a short period of time.