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
[{'content': 'Earliest symptom of acoustic neuroma is: \nSelect and explain. \nA. Facial weakness, B. Unilateral sensorineural deafness, C. Reduced corneal reflex, D. Cerebellar signs', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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.', 'role': 'assistant'}]