Presentation
Headaches
Patient Data
Lesion extends alongside the corpus callosum and shows intense bright signals on T1W, T2W, and fat-saturation suppressed on FLAIR images
Chemical shift artifact is observed around it on T1-weighted and SWI images. There is no evidence of diffusion restriction.
Dysgenesis of the rostrum and splenium parts of the corpus callosum is apparent.
Case Discussion
Pericallosal lipomas can be classified into two types according to their imaging characteristics. In this instance, the lipoma is of the curvilinear type due to its shape along the margin of the corpus callosum and its thickness being less than 1 cm. A frequent correlation is observed with corpus callosum agenesis or dysgenesis, as seen in this case.
Additionally, caution is advised due to the presence of a peripheral dark rim-like hematoma caused by the chemical shift artifact on SWI. Always look out for the fat sat suppression sequence first.
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