Recent spells of ataxia, headache possible visual loss and history of colon cancer. MRI: There is a 6 mm diameter lesion with extensive peripheral susceptibility effect and punctate central T1 and T2 hyperintensity in the white matter anterior to the frontal horn of the left lateral ventricle. There is perhaps a small adjacent developmental venous anomaly. There is no evidence of intracranial hemorrhage or acute infarct. The brainstem and cerebellum appear unremarkable. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable. The right globe is elongated with a scleral buckle and lens implant.MRA: There is no evidence of significant steno-occlusive lesions or aneurysms.
1. A 6 mm diameter lesion in the white matter anterior to the frontal horn of the left lateral ventricle likely represents a cavernous malformation. 2. No evidence of acute acute infarct.3. No evidence of significant steno-occlusive lesions or aneurysms.