abstract:The anterior horn of the lateral ventricle (also anterior cornu of the lateral ventricle, frontal horn of the lateral ventricle or precornu) is a portion of the lateral ventricle that passes forward and laterally, with a slight inclination downward, from the interventricular foramen into the frontal lobe, curving around the anterior end of the caudate nucleus. Its floor is formed by the upper surface of the reflected portion of the corpus callosum, the rostrum.