Interhemispheric lipoma connected to subcutaneous lipoma via lipomatous stalk.

Lipomas are rare intracranial lesions and are generally thought to be asymptomatic. The vast majority of intracranial lipomas are viewed as incidental findings on imaging studies and treated conservatively. Intracranial lipomas are frequently accompanied by additional intracranial congenital malformations, but only rarely has an association with subcutaneous lipomas been described. We report an infant with a subgaleal lipoma in the region of the anterior fontanelle connected to a large interhemispheric (pericallosal) lipoma via a tiny lipomatous stalk. Because of this association, infants who present with a subcutaneous lipoma of the scalp might be considered for MR imaging to evaluate for an intracranial component.