Abstract

PurposeTo assess the potential role of magnetic resonance imaging (MRI) as a complementary diagnostic tool to ultrasonography (US) in the diagnosis of fetal renal anomalies in pregnant women with oligohydramnios in the absence of amniotic membrane rupture. MethodsNinety pregnant women, with oligohydramnios were prospectively evaluated using both US and MRI. Prenatal findings were correlated with the babies’ outcome. ResultsMRI studies of diagnostic quality were obtained in all fetuses. The US and MRI findings were concordant in 79 (87.8%) of the fetuses. MRI modified and changed the diagnosis in 11 fetuses (12.2%), these were five fetuses in which US diagnosis was inconclusive, five cases in which the diagnosis changed from bilateral renal agenesis to unilateral agenesis with the other kidney multicystic dysplastic kidney (MCDK), and in the remaining fetuses the modification was from bilateral renal agenesis to unilateral agenesis with the other kidney structurally normal.Concordant findings for the prenatal US and MRI scans were seen in 100% of the autosomal recessive polycystic kidney disease (APCKD), 96% of MCDK, and 92.9% of bilateral normal kidneys. ConclusionMRI is of value in cases of oligohydramnios in limited circumstance when US findings were inconclusive.

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