FIGURE 1

CT angiography in a newborn baby with hydranencephaly. (a) 3D-CTA, sagittal view. This global view shows the extent of cerebral damage. Note the spared portion of the frontal lobes fed by partially patent anterior cerebral arteries. (b) 3D-CTA, craniocaudal view, showing sparing of the brainstem and part of the cerebellum, and of the medial aspect of the left occipital and bilateral temporal lobes. Note the absence of other brain structures, at the exception of a small island of cerebral tissue in the right middle cranial fossa (arrow), vascularized by an hypoplastic right middle cerebral artery (arrowhead). (c) 3D-CTA, posteroanterior view, showing the right middle cerebral artery (arrowhead) feeding a small island of cerebral tissue (arrow). Note the straight course of the middle cerebral artery, as opposed to an upward deviation that would be characteristic of hydrocephalus.