Hemorrhagic hereditary telangiectasia. MRI: There is an unchanged cavity with marginal hemosiderin staining in the left pons and middle cerebellar peduncle. There is a prior catheter tract with hemosiderin staining in the right frontal lobe. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are not enlarged, aside from slight ex vacuo dilatation of the fourth ventricle. There is no midline shift or herniation. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is mucosal thickening in the right frontoethmoid recess region.MRA: There is no evidence of gross arteriovenous malformation, significant steno-occlusive lesions, or aneurysms. There is a diminutive right vertebral artery.
1. Unchanged cavity with marginal hemosiderin staining in the left pons and middle cerebellar peduncle.2. No evidence of gross arteriovenous malformation, significant steno-occlusive lesions, or aneurysms.