LACUNAR SKULL (Craniolacunia or Luckenschadel Skull)

• Considered a mesenchymal dysplasia of the cranial vault and endosteum.
• Present at birth and disappears at 3-6 months.
• Associated with:
• 1. Encephaloceles.
• 2. Meningoceles.
• 3. Meningomyeloceles.
• 4. Spina bifida.
• 5. Arnold - Chiari ll malformation.

• Usually normal even in the late third trimester.
• Defects in ossification involving the inner table.
• Defects in ossification involving all cranial tables (craniofenestra).

Post Natal Skull X-Ray

• Rounded areas of lucency (pits involving inner table and diploic space) outlined by strips of bone (residual ridges of normal skull) in the upper parietal region.
• May extend through the outer table resulting in craniofenestra.