Pericallosal lipomas are rare benign intracranial masses that arise during embryonic development, typically categorized into tubulonodular and curvilinear subtypes. A mixed variant of both tubulonodular and curvilinear subtypes is very rare. Patients with pericallosal lipomas may be asymptomatic or may have different presentations, such as headaches. Conservative medical management is the mainstay of therapy for those without epileptic seizures or associated vascular malformations. We present a case of a mixed variant pericallosal lipoma in a patient with chronic headaches that were diagnosed using head computed tomography (CT) and brain magnetic resonance imaging (MRI).

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Atypical Mixed Variant of Pericallosal Lipoma With Splenial Dysgenesis.

We are reporting a case of interhemispheric-pericallosal lipoma, associated with bilateral small lateral ventricle choroid plexuses and third ventricle lipoma as well as partial agenesis of splenium of corpus callosum. Presentation in our case does not correspond to existing classification of pericallosal lipoma and as it is very rare, we are presenting it as a case report. Intracranial lipoma itself is a very rare anomaly and account for 0.06% to 0.46%. It represents a group of developmental abnormality of brain parenchyma that occur during embryogenesis, and it is located more frequently (about 50%) in the pericallosal cistern and may extend into one or both lateral ventricles. Pericallosal lipoma can also be associated with varying degree of callosal anomalies.

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Muhammad Sohail Amin

Papers

A Rare Case of Pericallosal-Interhemispheric Lipoma