Prenatal urinoma related to ureteropelvic junction obstruction: poor prognosis of the affected kidney.
OBJECTIVE
We evaluated functional outcome of kidneys with fetal urinoma associated to ureteropelvic junction obstruction.


METHODS
We retrospectively reviewed 5 cases of antenatally diagnosed urinoma associated to hydronephrosis. Prenatal imaging work-up consisted of ultrasound (US) and magnetic resonance (MR) examination. Differential renal function was assessed postnatally with renal scintigraphy.


RESULTS
Four male fetuses and 1 female fetuse presented with urinoma with hydronephrosis diagnosed by US at 24-25 weeks gestational age and confirmed by MRI examination at 28-29 weeks gestational age. On postnatal US, urinoma had disappeared in 4 cases. Parenchyma of the affected kidney was poorly differentiated in all cases. Ureteropelvic junction obstruction was confirmed in the 5 cases. Renal scintigraphy revealed poor functioning kidney (1%) in 2 cases, no function in 1 case, and impaired function in 2 cases (17%).


CONCLUSIONS
Association of upper urinary tract dilatation caused by ureteropelvic junction obstruction and prenatally diagnosed urinoma may suggest a poor ipsilateral functioning kidney.
Stathopoulos
Lefteris
L
Department of Pediatric Surgery, Hôpital Nord, Université de la Méditerranée, Marseille, France.
Merrot
Thierry
T
Chaumoître
Kathia
K
Bretelle
Florence
F
Michel
Fabrice
F
Alessandrini
Pierre
P
D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D007682:Kidney Pelvis; D008297:Male; D011379:Prognosis; D012189:Retrospective Studies; D014517:Ureteral Obstruction / Q000150:complications* / Q000175:diagnosis; D053584:Urinoma / Q000175:diagnosis / Q000209:etiology*