Curvilinear pericallosal lipomas diagnosed incidentally during evaluation following trauma with corpus callosum abnormalities in two patients.

P lipomas are the most habitual location for an intracranial lipoma. They are fat-containing lesions arising from the interhemispheric fissure intimately related to the corpus callosum, which is often abnormal. They originate from aberrant differentiation of the persistent primitive meninx.