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Aneurysm of the circle of Willis. Comparison between computed tomography and angiography.

The authors report their experience in 13 patients with unruptured non-giant aneurysms diagnosed at computed tomography (CT), who were without clinical deficits but who complained of chronic headache or cranial nerve palsy and had other members in their families with a cerebral vascular malformation. Screening with contrast-enhanced CT is discussed with respect to certain social groups. Surgical management before rupture of aneurysms could be envisaged in view of the bad prognosis when rupture has occurred.