Acoustic neuroma may be classified according to the findings on magnetic resonance imaging (MRI) or it can also be classified based on microscopic histopathology, and whether or not they are associated with neurofibromatosis type 2. Based on microscopic histopathology, acoustic neuroma may be classified into four subtypes: conventional schwannoma, cellular schwannoma, plexiform schwannoma, and melanotic schwannoma. While acoustic neuromas are benign tumors, there is no established system for the staging of acoustic neuromas. Koos grading scale provides four grades based on extrameatal extension and compression of the brain stem , a reliable method for tumor<unk>  which is used in practice.
Acoustic neuroma classification
Ganglioneuroma classification
Carotid body tumor epidemiology and demographics
Acoustic neuroma epidemiology and demographics
Ganglioneuroma staging
Meningioma classification
Hamartoma classification
Ganglioneuroma physical examination