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Clinical and Radiologic Features

Michael H. Silber, MB, ChB, FCP(SA); Burton A. Sandok, MD; Franklin Earnest IV, MD

Arch Neurol. 1987;44(9):965-969.

Abstract
• Thirty-one patients with vascular malformations of the posterior fossa were studied to determine their clinical presentation and radiologic diagnosis. The most common clinical presentations were acute hemorrhage (68%, 21/31) and progressive or fluctuating focal neurologic deficits resembling those found in other pathologic processes (19%, 6/31). Trigeminal neuralgia and hemifacial spasm occurred in these patients, but they were rarely initial presenting symptoms. Computed tomography, after infusion of contrast medium, was abnormal in 95% (20/ 21) of the patients. Angiography established or confirmed the diagnosis in most of the patients; however, a negative angiogram, especially in cases with recent hemorrhage, does not exclude the diagnosis.

Author Affiliations
From the Departments of Neurology (Drs Silber and Sandok) and Diagnostic Radiology (Dr Earnest), Mayo Clinic and Mayo Foundation, Rochester, Minn.

Footnotes
Accepted for publication May 4, 1987.

Reprints not available.

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