| Vermian malformation | Total number by U/S | Total number by fetal MRI | Isolated PFAs | Associations | ||
| Isolated vermian malformation | Associated brain stem malformations (hypoplasia, or aquiductal stenosis) | Associated cerebral anomalies. (C.C dysgenesis, lissencephaly, VM, IH cyst, encephalocele) | Associated extra-cranial anomalies (spinaldysraphism with meningocele, renal dysplasia, HSM. Post urethral valve, imperforate anus with limb anomalies) | |||
| Number | 12 | 24 | 4 | 3 | 10 | 7 |
| Percent from total cases | 20% | 40% | 6.7% | 5% | 16.6% | 11.6% |