PMC5241712_01
MRI of the fetal head at 25 weeks of gestation. T2-weighted images show ventriculomegaly, atrophy of the cerebral parenchyma and hypoplasia of the corpus callosum.
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At 26 weeks of gestation, magnetic resonance imaging (MRI) of the fetus revealed severe ventriculomegaly, atrophy of the cerebral parenchyma and hypoplasia of the corpus callosum (Fig. 1).
Ultrasound examination revealed bilateral renal hypoplasia at 30 weeks of gestation. [Long axis length of right/left kidney: 14 mm/17.8 mm (normal range: 28-40 mm)].
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At 30 weeks of gestation, bilateral renal hypoplasia became apparent (Fig. 2).
Transition of AFI. Oligohydramnios with AFI of 1.8 cm was diagnosed at 26 weeks of gestation. The volume of the amniotic fluid started to increase gradually from 28 weeks of gestation up to AFI of 15 cm at 34 weeks of gestation.
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Interestingly, the volume of the amniotic fluid started to increase gradually from 28 weeks of gestation up to AFI of 15 cm at 34 weeks of gestation (Fig. 3).
Transition of biparietal diameter (BPD). The growth in the size of the head was almost arrested from 22 weeks of gestation; however, it started to increase again from 28 weeks of gestation.
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With regard to the fetal growth, the growth in the size of the head was almost arrested from 22 weeks of gestation; however, it started to increase again from 28 weeks of gestation (Fig. 4).   
MRI of the infant's head. Axial T2-weighted image shows hypoplasia of cerebral parenchyma, which is dominant in the right hemisphere, resulting in characteristic porencephaly.
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Seven days after the birth, a head MRI revealed the characteristic findings of microcephaly and porencephaly (Fig. 5). The infant is currently under follow-up and has only slight rigidity in the limbs, predominantly on the left side, at 3 months of age (Fig. 5).