Pediatric Aplasia Cutis

  • Etiology: Congenital skin defect which may have underlying skull defect
  • Imaging: Possible defect in skull underneath cutaneous lesion
  • DDX:
  • Complications:
  • Treatment:
  • Clinical:

Radiology Cases of Aplasia Cutis

CT of aplasia cutis
3D CT without contrast of the skull viewed from above in soft tissue windows at 2 weeks of age (left) shows a defect in the scalp in the region of the anterior aspect of the sagittal suture. 3D CT without contrast of the skull viewed from above in bone windows done 10 years later (right) shows a defect in the skull in the region of the anterior aspect of the sagittal suture.
MRI of aplasia cutis
Axial T1 MRI without contrast (above left) and axial T2 (above right) of the brain show an oval lesion on the subcutaneous tissue which is isointense on T1WI and hyperintense on T2WI. Coronal T1 MRI without contrast (below) show a bone defect in the skull beneath the cystic lesion.