On the section of the anterior horn of lateral ventricles appearing for the first time, the extended lines of the bilateral anterior rami of lateral sulcus intersected on the superior aspect of the genu of corpus callosum by obtuse angle.

• 在侧脑室前角首次出现的断面上 ,双侧外侧沟前支的延长线呈钝角相交于胼胝体膝上方 ;