Sonographic diagnosis

Number

Fetal MRI Cerebellar additional findings or changed diagnosis

Management based on US diagnosis.

Management based on fetal MRI diagnosis.

Postnatal MRI for live-birth non-terminated cases

Post F malformations

Small retrocerebellar cyst

1

Partial vermian agenesis…DW variant

Follow up

Termination if not precious

As fetal MRI

Mega cisterna magna

1

Global cerebellar and vermian hypoplasia

Follow up

Termination if not precious

As fetal MRI

Chiari malformation

7

· Degree of cerebellar herniation including the vermis

· Demonstrate of exact site of encephalocele in ChiariIII.

· Cerebral associations as corpus callosaldysgenesis

· Demonstration of exact site, size and content of meningocele for proper prenatal or postnatal surgery.

Termination on confirmation

· Termination if not precious baby,

· If precious baby; fetal MRI additional findings will aid in managmenet especially in prenatal surgery.

As fetal MRI

DW malformation

6

Ø Confirmed vermian agenesis

Ø Corpus callosaldysgenesis

Termination

Termination if was diagnosed earlier and if not precious.

As fetal MRI

Cortical malformation

Lissencephaly with VM and cleft lip

1

Rhomboncephalosynapsis with C.C dysgenesis and z-shaped brain stem…… Walker-Warburg syndrome (WWS) or HARDE syndrome (AR)

Termination if not precious

Lethal form of congenital muscular dystrophy so Termination

………..

Exencephaly

Hydranencephaly

1

Pontocerebellar dysplasia….

Fowler syndrome (AR)

Termination only

Termination with Genetic counseling which confirmed the diagnosis.

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Midline anomalies

Interhemispheric cyst versus schizencephaly

3

Cerebellar and vermian compression by the cyst …. confirmed inter-hemispheric cyst.

Needs confirmation as … Follow up if cyst versus termination if schizencephaly

Follow up

As fetal MRI