Reason: episodes of dizziness History: history of breast cancer The CSF spaces are appropriate for the patient's stated age with no midline shift. No abnormal enhancing mass lesions are appreciated intracranially. No intracranial hemorrhage is identified. No edema is identified within the brain parenchyma.Normal vascular flow voids are present in the distal carotid and vertebral arteries, the basilar artery and the proximal anterior, middle and posterior cerebral arteries as well as the internal cerebral veins and superior sagittal sinus.The visualized portions of the paranasal sinuses are clear. The visualized portions of the mastoid air cells are clear. The visualized portions of the orbits are intact.Additional high-resolution images through the temporal bones raise the question of dehiscence of the superior semicircular canals. Retro-reconstrucitons of the patient's recent CT of the head, raise the question of dehiscence of the right semicircular canal. The bony separation between the right superior semicircular canal and the adjacent middle cranial fossa is incomplete.
1.No evidence for brain metastases.2.Findings raise the question of a mild dehiscence of the right superior semicircular canal versus near dehiscence of the right superior semicircular canal . Please correlate with clinical symptoms.