Female, 30 years old, with three weeks of persistent headache and visual changes, six months postpartum, family history of aneurysm at young age. MRI brain:The cerebral and cerebellar hemispheres and brainstem show normal signal intensity and morphology. No restricted diffusion is seen.A 2 mm focus of enhancement deep within the right internal auditory canal is of uncertain significance. No other pathologic parenchymal or extra-axial enhancement is observed.No evidence of parenchymal edema, mass, or mass effect is seen. There is no evidence of intracranial hemorrhage or abnormal extra-axial fluid. The ventricular system is normal in caliber and morphology. Signal intensity of the bone marrow is unremarkable. No significant abnormalities of the paranasal sinuses are detected.MRA brain:No evidence of any intracranial aneurysm is seen within the limitations of MRA technique. No significant vascular stenosis or occlusion is identified.MRV brain:The dural venous sinuses and deep venous structures of the brain are patent.
1.A 2 mm focus of enhancement deep within the right internal auditory canal is of uncertain etiology and significance. Correlation with cranial nerve VII or VIII dysfunction is suggested.2.Evaluation of the brain is otherwise within normal limits.3.No intracranial aneurysm is detected.4.The intracranial venous structures are patent.