The tapetum corporis callosi is a layer of nerve fibers of the corpus callosum that course in an arcuate manner laterally and caudally.
Anatomy
The tapetum is formed primarily by decussating fibers of the splenium of the corpus callosum and bridges the atrium of the lateral ventricle, then courses inferiorly in the lateral wall of the occipital horn of the lateral ventricle and begins in the lateral wall of the temporal horn of the lateral ventricle. The tapetum lies directly against the ependymal lining of the ventricular wall and, in the occipital horn of the lateral ventricle, forms an intermediate layer directly medial to the optic radiation in the coronal and axial sections[^1].
