medial anterior thalamic vein medial anterior thalamic vein the paired (right and left) medial anterior thalamic veins (latin: venae mediales anterior thalami dextra et sinistra) originate each from the medial anterior part of the thalamus. benno shlesinger in 1976 classified these veins as belonging to the central group of thalamic veins (venae centrales thalami). medial anterior thalamic veinsdetailsdrains fromanterior portion of the corresponding half of the thalamusdrains tointernal cerebral veinidentifierslatinvenae mediales anterior thalami dextra et sinistraanatomical terminology