Fetal urinoma: two new cases and a review of the literature.
OBJECTIVE
To evaluate the functional prognosis of kidneys affected prenatally by urinomas.


METHODS
This was a retrospective review of cases of fetal urinoma reported in the literature, as well as two of our own cases.


RESULTS
Twenty-three patients with a prenatal diagnosis of urinoma (five bilateral) were included in the analysis. Postnatal ipsilateral renal function was observed in only six of the 28 renal units (i.e. around 20%).


CONCLUSIONS
Although the precise causes of urinomas are still unknown, this review shows that in the event of a fetal urinoma, the probability of a non-functional dysplastic ipsilateral kidney lies at around 80%. In-utero puncture only appears to be justified in cases where fluid accumulation has mass effects on adjacent major structures.
Gorincour
G
G
Department of Pediatric Radiology, Sainte Justine Hospital, Montreal, Quebec, Canada. guillaume.gorincour@mail.ap-hm.fr
Rypens
F
F
Toiviainen-Salo
S
S
Grignon
A
A
Lambert
R
R
Audibert
F
F
Garel
L
L
Fournet
J-C
JC
D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D012079:Renal Circulation; D016216:Ultrasonography, Prenatal / Q000379:methods*; D053584:Urinoma / Q000000981:diagnostic imaging* / Q000503:physiopathology