It presents in Non-contrast CT head as a hypodense lesion with or without speckled peripheral calcification, located within the corpus callosum region. Any Intracranial Lipomas do not cause mass effect and vessels course through these lesions unperturbed, reflecting their development basis, as they occur because of the persistence of the meninx primitiva.
Corpus callosum lipoma can be an isolated anomaly or associated with other anomalies such as agenesis of corpus callosum, Chiari II, interhemispheric cyst, or migrational anomalies. The most common location of intracranial lipoma is the corpus callosum. Other common locations are quadrigeminal cistern, cerebellopontine angle cistern, and choroid plexus region.
DD:
Interhemispheric Hemorrhage
Fat within Interhemispheric falx
Corpus callosum lipoma can be an isolated anomaly or associated with other anomalies such as agenesis of corpus callosum, Chiari II, interhemispheric cyst, or migrational anomalies. The most common location of intracranial lipoma is the corpus callosum. Other common locations are quadrigeminal cistern, cerebellopontine angle cistern, and choroid plexus region.
DD:
Interhemispheric Hemorrhage
Fat within Interhemispheric falx
The meninx primitiva refers to the mesenchymal covering of the brain from which the arachnoid mater, pia mater and dura mater are formed in mamals and birds. In lower vertebrates these three remain undifferentiated.