Presentation
A pregnant woman presented for a routine third trimester obstetrical ultrasound examination.
Patient Data
Cloverleaf/trilobate shape of the skull.
The head is small, with the BPD measurement less than the femoral measurement.
Case Discussion
Cloverleaf skull, refers to a type of severe craniosynostosis which gives the skull a cloverleaf shape.
It is a very rare condition, with less than 130 case reports globally. It results from premature intrauterine closure of the sagittal, coronal and lambdoid sutures, which gives a trilobate appearance to the skull.
It is usually seen in the following conditions:
• thanatophoric dysplasia :classically type II.
• severe Apert syndrome.
• severe Crouzon syndrome.
• Carpenter syndrome.
• Boston-type craniosynostosis.