Abstract

Aicha Bennani*, Oumaima Sahraoui, Hanaa Lazhar, Aziz Slaoui, Najia Zeraidi, Amina Lakhdar, Aicha Kharbach and Aziz Baydada

ABSTRACT

The dandy walker malformation is estimated to be 1 per 10 000 births. It can be isolated or associated with other central nervous system malformations or systemic anomalies. Most cases of DW malformation are diagnosed prenatally. There are neuroimaging diagnostic criteria that make it possible to distinguish the dandy walker malformation from other cystic posterior fossa malformations on ultrasound and MRI. The dandy walker malformations have various aetiologies and diverse outcomes. In our case, a patient with twin pregnancy at 32 weeks of gestation. She was admitted to the emergency room for preterm labour. The ultrasound revealed a dandy walker syndrome and uterine growth restriction in one twin in a monochorionic diamniotic pregnancy.