Hereditary hemorrhagic telangiectasia [I78.0], Reason for Study: ^Reason: Please assess for cerebral AVMs History: HHT, at risk for cerebral AVMs Brain MRIThere are two enhancing lesions, one on the posterior body of the left side corpus callosum adjacent to the left callosal sulcus (about 5mm) and another is on the right side of upper pons (about 2mm).The right upper pons lesion extends craniocaudally about 6mm, so it could represent prominent venous structure. Considering the patient's clinical information about HHT, these two lesions especially left corpus callosum posterior body lesion could represent so called capillary vascular malformation. There is no evidence of acute ischemic or hemorrhagic lesion.The ventricles, sulci and cisterns are symmetric and unremarkable. The gray-white matter differentiation is normal. There is no mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. The paranasal sinuses and mastoid air cells are clear.Brain MRA3D time of flight MOTSA MRA brain images with maximum intensity projections of the anterior/posterior intracranial circulation demonstrate normal ICAs, MCAs and ACAs. Vertebrobasilar system appears to be normal.
1. Two small enhancing lesions; one on the left corpus callosum posterior body and another on the right upper pons as described above. These lesions especially left corpus callosum lesion might represent the diagnosis of capillary vascular malformation. 2. Normal brain MRA