Abstract Book - 26th ESPU Congress, Joint Meeting with ICCS + SPU + AAP/SOU + AAPU + SFU

S8-9

(P)

ULTRASOUND MARKERS IN THE FOLLOW UP OF PYELOPLASTY

María FERNÁNDEZ-IBIETA

, Leonardo NORTES-CANO

, María José GUIRAO-PIÑERA

, Gerardo ZAMBUDIO-CARMONA

and José Ignacio RUIZ-JIMÉNEZ

1) Hospital C U V Arrixaca, Pediatric Surgery, Murcia, SPAIN - 2) Hospital CUV Arrixaca. Murcia. Spain, Pediatric

Surgery, Murcia, SPAIN

PURPOSE

There are few studies on the long term follow up of pyeloplasty. Is there a residual pelvis dilatation in all successful

procedures? How is the long term evolution of the sonographic parameters and measures postoperatively (PO)? In this

study, some useful sonographic parameters are highlighted to evaluate the expected evolution of renal pelvis after a

successful pyeloplasty

MATERIAL AND METHODS

We reviewed all successful pyeloplasties performed on obstructed renal pelvis with an Anterio-Posterior Diameter > 15

mm in the years 2001-2010. Ultrasound controls were made at 3 and 6 months postoperatively and then yearly

afterwards. We pretended to describe time course of hydronefrotic changes following unilateral pyeloplasties, using

three parameters: pelvic anterior-posterior diameter (APD), Pelvis/ Córtex Ratio (P/C R) and the percentage of

improvement in APD (PI-APD)

RESULTS

41 patients were included. Age at intervention ranged from 2 months to 10.3 years (mean 13 months, 83% were

operated in the first year of life). Median of follow up was 4 years (range 1-12 years) Mean APD preoperatively was 25

mm (range 16-54). At the third month PO, PI- APD was 28%. At the sixth month control, it was 51%, and remained

stable during the next consecutive yearly controls, without statistically significant variations (50%, 57%, 60%, 51%,

39%, 46%, 38%, 42%). P/C R diminished significantly already in the third month control (4.6 vs. 1.8, p=0.03). We

observed complete disappearance of hidronefrosis in 8 patients (19.5%).

CONCLUSIONS

Although early postoperative ultrasound changes occur, the ultrasound parameters remain often stable during long term

follow up. We documented the complete normalization of renal pelvis (no hydronephrosis) in one of every five patients.