25-year-old male with history of neurofibromatosis type I. Lower extremity weakness, rule out axial neurofibromatosis. MRA NECK:There is a separate origin of the left subclavian artery, left common carotid artery, and brachiocephalic trunk from the aortic arch. The left vertebral artery also arises from the arch which is a normal variant. The common carotid arteries and cervical internal carotid arteries are normal in course and caliber. Bilateral vertebral arteries are also normal in course and caliber. No evidence of stenosis, dissection, or vascular malformation. Visualized intracranial circulation appears grossly unremarkable.MRI CERVICAL SPINE:Examination of the cervical spine is limited to post contrast sequences. Precontrast sequences were acquired on 3/1/2016 and reported separately. Cerebellar tonsils are borderline low. Again seen is cervical syrinx extending from the mid C4 to the C6-C7 levels with a fragmented appearance. No abnormal enhancement within the cervical cord or discrete mass within the spinal canal or neural foramina is appreciated. Small foci of T2 hyperintensity and enhancement are seen in the subcutaneous soft tissues consistent with neurofibromas.MRI THORACIC SPINE:There is artifact at the level of the lower thoracic cord which makes assessment slightly difficult. No convincing cord signal abnormality however is appreciated. There is no evidence of syrinx or masses within the thoracic cord. No masses or stenosis involving the thoracic spinal canal or neural foramina. Vertebral body heights and alignment are maintained.Small foci of T2 hyperintensity and enhancement are seen in the subcutaneous soft tissues consistent with neurofibromas.
1. Post contrast images of the cervical spine demonstrate no abnormal enhancement or masses within the cervical spinal canal or neural foramina.2. Cervical syrinx again seen extending from the mid C4 to the C6-C7 levels. Cerebellar tonsils are borderline low measuring 3 to 4 mm below the foramen magnum.3. No masses within the thoracic spinal canal or neural foramina are appreciated.4. MRA neck demonstrates no evidence of stenosis, dissection, or vascular malformation.