Male, 18 years old, with sickle cell disease and small aneurysm seen on MRI/MRA one year ago. Assess for changes, stenosis, moyamoya. Cerebral morphology and signal characteristics are within normal limits. No tissue defects are seen. No evidence of restricted diffusion, focal signal abnormality, edema or mass effect is detected. There are no findings to suggest intracranial hemorrhage. The ventricles are normal in size and morphology. The pattern of enhancement on postcontrast images is within normal limits. No significant deficit or asymmetry is noted on perfusion imaging.MRA images are degraded by motion and are of lesser quality than those obtained on the prior examination. Nevertheless, the appearance of the ophthalmic segment of the right ICA is similar to prior in that there appear to be at least one and potentially two areas of vascular outpouching directed laterally which probably measure about 4 mm in length. No additional lesions are identified. The terminal ICAs and MCAs are both symmetric and of normal caliber with no areas of stenosis or occlusion. The left vertebral artery is dominant.
1.No evidence of acute or chronic ischemia or any other significant parenchymal brain abnormalities are noted.2.Stable appearance of the ophthalmic segment of the right ICA with one or possibly two areas of vascular outpouching which may represent aneurysms. CTA can be considered for a more detailed evaluation of these findings if clinically warranted.3.Elsewhere, no significant vascular abnormalities are detected, and in particular there is no evidence of moyamoya.4.No deficit or asymmetry is noted on perfusion imaging.