Evaluate anterior fontanelle lesion -- cystic lesion on CT. There is a non-enhancing T1 hypointense and T2 hyperintense nodule that measures up to 8 mm in the midline frontal region at the location of the anterior fontanelle, without intracranial extension. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. There is no abnormal intracranial enhancement. There is a normal degree of myelination for age. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Findings compatible with a subcentimeter dermoid or epidermoid cyst associated with the anterior fontanelle.