Dictionary.net

• nodule on roof of descending cornu of lateral ventricle.

• mass of gray matter at end of descending cornu of lateral ventricle.

1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland

• A projection in the roof of the descending cornu of the lateral ventricle at its anterior extremity.

1916 - Appleton's medical dictionary
By Smith Ely Jelliffe