 The intracranial internal carotid arteries are normal in course and caliber. There is perhaps minimal narrowing along the proximal inferior left M2 segment. The middle and anterior cerebral arteries are otherwise unremarkable. There is a fetal type right posterior cerebral artery, with nonvisualized right P1 segment. The post-PICA left V4 segment is developmentally diminutive. The right vertebral artery is dominant. The vertebral arteries, basilar artery, and posterior cerebral arteries are otherwise normal in course and caliber. There is no evidence of flow-limiting stenosis or aneurysm.There is redemonstration of the rounded T1 hyperintense lesion within the anterior third ventricle near the foramen of Monro measuring up to 1.4 cm, most likely representing a colloid cyst. There is a prominent mucosal retention cyst in the right maxillary sinus.MRA NECK
1.No evidence of flow-limiting stenosis or vascular occlusion.2.Mild focal narrowing at the left carotid bifurcation.3.Suboptimal visualization of proximal V1 segments likely in part due to tortuosity.4.Redemonstration of probable colloid cyst.5.Hypoenhancing lesions within the thyroid gland bilaterally which are nonspecific. Thyroid ultrasound recommended for further evaluation.