Corpus Callosum, Lateral View

Description

Arcing in the midline of the telencephalon, the corpus callosum is presented in lateral profile, with the rostrum and genu curving anteriorly and inferiorly, the body (truncus corporis callosi) running posteriorly, and the splenium forming the thickened posterior pole. Superior to the callosal body, the cingulate gyrus follows its contour, separated by the callosal sulcus, while the cingulate sulcus lies more dorsally on the medial surface of the hemisphere. Posteroinferiorly, the brainstem and cerebellum sit beneath the cerebrum, giving clear orientation for the posterior fossa relative to the posterior cerebrum. Clean midline anatomy. A lateral callosal view helps when teaching commissural fiber systems and their relationship to limbic cortex, because the cingulate gyrus wraps the callosum and anchors the cingulum bundle that links medial frontal, parietal, and temporal regions. Clinically, this anatomy matters in agenesis or dysgenesis of the corpus callosum, where the absent or malformed splenium and body alter interhemispheric connectivity and can be associated with colpocephaly and Probst bundles on neuroimaging. Surgeons also reference the cingulate-callosal relationship when planning interhemispheric approaches, where callosotomy corridors aim to minimize injury to cingulate cortex and pericallosal vessels. Neuroanatomy courses and behavioral neuroscience modules use this perspective to pair limbic system teaching with gross morphology of the cerebrum and commissures, and it works well in figure panels alongside sagittal MRI for callosal development or split-brain discussions. Medical textbooks and patient-facing neurosurgery materials can also cite it when explaining why lesions near the splenium produce disconnection syndromes such as alexia without agraphia. Anatomical accuracy verified by SciePro's Medical Advisory Board.