Pericallosal Lipoma and Agenesis of Corpus Callosum with Associated Lipoma of Choroid Plexus: A Rare Case Report

Abstract

Pericallosal lipomas are rare congenital malformative lesions occurring in the interhemispheric fissure closely related to the corpus callosum which is usually abnormal. Pericallosal lipomas may extend into either or both lateral ventricles and appearing as lipomas of choroid plexus in the absence of corpus callosum. I observed this in an interesting case, and, as this is uncommon, I reporting it in order to increase awareness about this unusual presentation and to review briefly criteria of its pathogenesis & diagnosis.

Pericallosal-Interhemispheric Lipoma Associated With Bilateral Ventricular Choroid Plexus Lipomas With Corpus Callosal Dysgenesis: Case Report

“…When the primitive meninx persists longer, instead of being resorbed, it differentiates into mature lipomatous tissue. Because of their malformative origin, pericallosal lipoma usually do not become hyperplasic [6] .…”

“…PCL account for 50% of all intracranial lipomas [2,3,4,5] . Hassan describes that the pathogenesis of a pericallosal lipoma is considered to be the result of an abnormal resorption of the primitive meninges [6] .…”

Lipoma of the corpus callosum: Fat in the brain

“…Corpus callosal lipoma should be differentiated from radiographically similar lesions such as dermoid, epidermoid, and gliomas, and is important for appropriate therapeutic planning. 5 Due to the rare occurrence and asymptomatic nature its differentiation from other intracranial radiologically similar lesions is necessary as the treatment modality differs. So, we present a case of incidentally diagnosed as tubulonodular corpus callosal lipoma after having fallen from a height and underwent a CT scan of the brain in the emergency room at our center.…”