Nonimmune fetal ascites: a series of 79 cases
Romain Favre1, Sophie Dreux, Marc Dommergues
1Department of Prenatal Diagnosis, Strasbourg, France. echofcmc@imaginet.fr
Objective:
The purpose of this study was to analyze the precision of ultrasonography in defining the cause and prognosis in fetal ascites.
Study Design:
We conducted a retrospective study of 79 cases of fetal ascites.
Results:
The mortality rate was 57% overall and ranged from 100% (7/7 cases) for metabolic storage disease to 0% (0/3 cases) in chylous ascites. Ascites before 24 weeks of gestation or combined with fetal hydrops indicates poor prognosis (respectively, 78.6% vs 45% mortality rate after 24 weeks; P<.01; and 77% vs 50.8% without hydrops; P<.02). Ascites was organic in 45 cases, infectious in 13 cases, idiopathic in 12 cases, and genetic in 9 cases. The cause was defined ultrasonographically in 28 of the 45 organic ascites and in 8 of the 25 isolated ascites. Urinary cause was the most frequent and the most successfully specified cause (14/15 cases).
Conclusion:
Routine ultrasonography detects fetal ascites, but the cause is extremely variable and difficult to specify. When associated with fetal hydrops, the prognosis is poor.
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