This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Earliest symptom of acoustic neuroma is: 
Select and explain. 
A. Facial weakness, B. Unilateral sensorineural deafness, C. Reduced corneal reflex, D. Cerebellar signs
B: Unilateral sensorineural deafness
Answer: B: Unilateral sensorineural deafness 
Explanation: Ans. B Acoustic neuroma - Progressive unilateral sensorineural hearing loss often accompanied by tinnitus is the presenting symptoms in majority of cases Imbalance or unsteadiness, True veigo is seldom seen *V cranial nerve is the earliest nerve to be involve rest VII, IX, X cranial nerve also commonly involved XI, XII, III, IV, VI are affected when tumor is very large Brain stem, cerebellar involvement an ICT symptoms also occurs. **The presence of bilateral vestibular schwannomas is diagnostic of neurofibromatosis type 2.