MSRA-0537
As a general practice registrar, you are reviewing a patient who was referred to ENT and has a history of acoustic neuroma on the right side. The patient, who is in their mid-50s, returned 2 months ago with pulsatile tinnitus in the left ear and was diagnosed with a left-sided acoustic neuroma after undergoing an MRI scan. Surgery is scheduled for later this week. What is the probable cause of this patient’s recurrent acoustic neuromas?