New embolization method using estrogen for dural arteriovenous malformation and meningioma.

For the treatment of dural arteriovenous malformations, conjugated estrogens were infused continuously through a cannula inserted into the external carotid artery. In 6 or 8 patients, therapeutic effects such as total or partial disappearance of the nidus were observed. The same method was employed to occlude the feeders of meningiomas in 3 patients to reduce bleeding during the operations. The histological findings from the surgically extirpated meningioma are described.