**Sagittal section clearly demonstrate the curvilinear morphology and its relationship with the corpus callosum Clinical History: 35-year-old female, incidental finding. Radiological Findings: A thin, curvilinear T1-hyperintense lesion is observed extending along the callosal sulcus, following the dorsal aspect of the corpus callosum. The signal characteristics are consistent with fat. There is no associated corpus callosum agenesis or dysgenesis; the corpus callosum appear
