Presentation
Dizziness, headache, and vertigo one month ago
Patient Data
Curvilinear markedly hypodense interhemispheric mass corresponding to fat density superior and posterior to the corpus callosum. The corpus callosum is mildly dysgenetic (absent splenium).
Case Discussion
Patient presented with headaches and dizziness for two months. No history of seizures. On clinical and neurological examination no abnormality was seen. CT revealed an interhemispheric markedly hypodense mass with fat density, absent splenium of the corpus callosum was also seen, suggesting a diagnosis of lipoma.
On CT scan, lipomas appear as areas of fat density (-60 to -100 HU) which may be calcified and sometimes accompanied by other anomalies. These specific aspects, prospect differential diagnosis with dermoid cysts and teratomas, MRI is the most useful modality for a differential diagnosis and identification of associated congenital malformations, lipomas appear homogenously hyperintense on T1 and T2 weighted images, they homogenously lose their intensity on fat suppression sequences
Conclusion: The lipoma of the corpus callosum are rare, fat-containing asymptomatic lesions, mostly associated with dysgenesis of the corpus callosum. Diagnosis incidentally occurs during neuroradiological investigations for other conditions. MRI is the most useful modality for a differential diagnosis. Prognosis and symptoms depend on associated malformations. Surgical treatment is mostly not indicated and should be avoided