Cranial mass
The cranial mass was one of the two masses of the head.
In 2370, in the "Anatomical Scan – 9861" for Juliana Tainer, the cranial mass was listed under the coronal plane portion of the graphic. For her cranial mass, it was noted that Tainer had normal function. (TNG: "Inheritance")
The second mass of the head was the facial mass.