RATIONALE: Learning about the side effects of stereotactic radiosurgery in patients with brain tumors or other brain disorders may help doctors plan treatment and help patients live more comfortably. PURPOSE: This clinical trial is studying the acute side effects in patients who are undergoing stereotactic radiosurgery for brain tumors or other brain disorders.
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Short-term adverse effects as assessed by a questionnaire
Timeframe: at 1 week, 1 month, and 2 months