PMC3123011_01
Left and middle pictures show dilated ventricles with dolichoectatic basilar artery compressing the midbrain and outflow of the third ventricle. The right picture shows the computerized tomography angiogram with the dilated and elongated basilar trunk extending into the suprasellar space
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F1
The basilar artery was also tortuous, with a diameter of 7.0 mm and extending into the suprasellar cistern [Figure 1].