Intracranial lipomas. Case presentations and CT features

Intracranial lipomas are very rare and reports of infantile lipomas are scarce. Nine cases of intracranial lipomas, five in infants and four in adults are described and characteristic findings of the CT are presented. Two of the six cases involved lipomas at the corpus callosum that were associated with frontal dysraphism and cranium bif idum at the midline of frontal region. Five of the nine cases involved lipomas at the quadrigeminal cistern. In one case with an advanced enlargement in circumference of the head in the pen-natal period, a V-P shunt was conducted for obstructive hydrocephalus. Ano-ther case had widely ranging agenesis of the corpus callosum associated with an interhemispheric cyst showing the right sided parietal and occipital lobes through the callosal agenesis. One of the nine cases had a lipoma in the left sylvian fissure and in the adult was in the interpeduncular cistern. Four of the nine cases were associated with agenesis of the corpus callosum. Based on these cases and published reports, the CT features of intracranial lipoma are discussed.