It is the cerebellar vermis.
corpus callosum
vermis
a large portion of the brain, serving to coordinate voluntary movements, posture, and balance in humans, being in back of and below the cerebrum and consisting of two lateral lobes and a central lobe.
It means there is a significant growth or abnormality in the back portion of the brain near the cerebellum, specifically the inferiior cerebellar vermis. Further investigation is needed to determine the nature of the lesion and its impact on surrounding structures.
There are quite a number of synonyms for the word vermis. The common ones are vermis cerebella and neural structure. The vermis is the narrow central part of the cerebellum.
Count Otto Vermis was created in 1977.
The pons connects the cerebrum to the cerebellum. The cerebellum is responsible for the motor control in the brain.
vermis
De Vermis Mysteriis - album - was created on 2012-04-03.
the vermis
Cerebellum