Table 2.

Prenatal diagnosis of additional central nervous system (CNS) anomalies in 117 fetuses with CNS findings other than ventriculomegaly (Group 4)

		Atrial diameter (mm)
Diagnosis (final consensus)	n	Mean ± SD	Min–Max
Dysgenesis of corpus callosum	41	14.5 ± 5.8	8–42
Cerebellar hypoplasia	18	14.3 ± 4.2	10–24
Spinal neural tube defect	17	14.9 ± 6.7	9–37
Hemorrhage	17	17.9 ± 8.0	7–42
Chiari malformation	16	14.4 ± 6.5	9–37
Defect of septum pellucidum	16	19.4 ± 8.6	10–37
Porencephaly	16	25.5 ± 9.4	10–42
Cyst	13	12.8 ± 3.6	9–20
Polymicrogyria, lissencephaly	12	13.3 ± 3.8	10–23
Dandy–Walker variant/ malformation	9	12.6 ± 2.0	10–17
Congenital infarction	8	20.6 ± 8.9	12–39
Heterotopias	5	14.2 ± 4.0	10–20
Holoprosencephaly	4	21.3 ± 14.5	12–38
Megacisterna magna	3	12.3 ± 3.2	10–16
Schizencephaly	3	14.0 ± 1.0	13–15
Micrencephaly	2	16.5 ± 9.2	10–23
Encephalocele	2	18.0 ± 8.5	12–24
Abnormal midbrain/thalamus	1	14.0	—
Craniosynostosis	1	11.0	—
Periventricular leukomalacia	1	22.0	—
Tumor	1	25.0	—