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Paul B. Eckman, MD; Richard A. Kramer, MD; Paul H. Altrocchi, MD

Arch Neurol. 1971;25(1):81-87.

Abstract
Four patients presented with hemifacial spasm, including one case of bilateral hemifacial spasm, each of whom showed arteriographic evidence of a vascular abnormality in the cerebellopontine angle in the region of the seventh nerve. The problem of hemifacial spasm is reviewed, and our conclusions are in agreement with other recent studies based upon arteriography or neurosurgical exploration of the posterior fossa, that a significant portion of cases of hemifacial spasm are caused by mechanical compression of the 7th nerve in the cerebellopontine angle, usually by a vascular structure such as an elongated or tortuous normal artery, an anomolous artery, an aneurysm, or arteriovenous malformation.

Author Affiliations
Palo Alto, Calif

From the departments of neurology (Drs. Eckman and Altrocchi) and radiology (Dr. Kramer), Palo Alto Medical Clinic, and the Stanford University Medical School, Palo Alto, Calif.

Footnotes
Accepted for publication Jan 2, 1971.

Reprint requests to Department of Neurology, Palo Alto Medical Clinic, 300 Homer Ave, Palo Alto, Calif 94301 (Dr. Eckman).

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