Quadrigeminal cistern lipoma: A rare case report with review of literature

Two cases, one of a 6-old-year male and another of 18-year-old female with an intracranial lipoma of quadrigeminal region is reported. Intracranial lipomas usually occur in midline areas and are extremely uncommon with an incidence of 0.1% of all intracranial tumors. These were incidentally detected by computed tomography (CT) or by autopsy. Autopsy incidence of intracranial lipoma is 0.08-0.46%, while incidence of CT findings is not >0.03-0.06%. CT and magnetic resonance imaging (MRI) examination usually lead to the diagnosis, because of the very low attenuation values of lipomas on CT and the short T1 and T2 on magnetic resonance. We describe the findings of imaging studies, including CT, MRI along with a brief review of the literature.