Body of corpus callosum

The body of corpus callosum is the long central part of the corpus callosum, extending from the genu anteriorly to the splenium posteriorly. Its fibres pass transversely across the midline and then radiate laterally into the white matter of both cerebral hemispheres, contributing to the interhemispheric integration of sensory, motor and higher cognitive information.

Anatomical relations

• Superiorly, the body is related to the callosal sulcus and cingulate gyrus, with the pericallosal vessels coursing along its superior surface.

• Inferiorly, it contributes to the roof of the bodies of the lateral ventricles. The septum pellucidum is attached to its inferior surface anteriorly, while the fornix lies further inferiorly.

Clinically, lesions of the body of the corpus callosum may disrupt interhemispheric communication.