Intratemporal vascular tumors: evaluation with CT.

Eleven patients each with a benign intratemporal vascular tumor (hemangioma or vascular malformation) were assessed with computed tomography (CT). Clinical, surgical, and histologic correlations were also available. On CT scans, most of the 11 tumors were smaller than 10 mm. Four occurred in or around the internal acoustic canal, six at the geniculate ganglion, and one at the posterior genu. The involved bone margins were often unsharp, and "honeycomb" bone or intratumoral bone spicules were sometimes present. Intratemporal vascular tumors cause profound nerve deficits despite their small size and must be resected early to salvage nerve function.