My father, 78 yrs old, was affected by vestibular schwannoma in his head. It was detected 1year and 7 months ago and quickly operated partially (due to chance of damaging of nerves) but worned by the surgeon that it will come back within next 5-7 years. Before operation we observed that his organs were getting weaker rapidly. Within 3 days he lost clear voice. After operation his condition was improved by 80% but one side ear and leg became weaker. Recently he is again saying that he has lost mostly of balance of body during standing and has to use a support. Is there any treatment to avoid firther operation?