= CRANIOLACUNIA = LACUNAR SKULL

= mesenchymal dysplasia of calvarial ossification (developmental disturbance)

Age: present at birth

Associated with:

1. Meningocele / myelomeningocele / encephalocele
2. Spina bifida
3. Cleft palate
4. Arnold-Chiari II malformation

• normal intracranial pressure

Location: particularly upper parietal area

• honeycombed appearance about 2 cm in diameter (thinning of diploic space)
• premature closure of sutures (turricephaly / scaphocephaly)

Prognosis: spontaneous regression within first 6 months of life

DDx:

1. Convolutional impressions = “digital” markings (visible at 2 years, maximally apparent at 4 years, disappear by 8 years of age)
2. “Hammered silver” appearance of increased intracranial pressure