ECT in patients with arachnoid cysts.

Electroconvulsive therapy (ECT) is often considered relatively contraindicated in patients with intracranial space-occupying lesions, especially those with increased intracranial pressure, edema, or mass effect. We describe the safe use of ECT in 6 patients with arachnoid cysts. We conclude that such lesions are probably not associated with increased morbidity in ECT but that neurological evaluation pretreatment is indicated.