Headache [R51], Reason for Study: ^Reason: Pt with year long almost always left sided headache. Exam normal but look for space occupying lesion (MRA coming too). Also look for evidence of pseudotumor - pt with 38 BMI. History: chronic left headache Brain MRIThere is no evidence of acute ischemic or hemorrhagic lesion. There is no evidence of abnormal enhancement. The ventricles, sulci and cisterns are unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The paranasal sinuses and mastoid air cells are clear.About 3.5mm downward displacement of bilateral cerebellar tonsil through the foramen magnum. There is no evidence of flattening of posterior aspect of eye globe, buckling of optic nerve sheath or extension of CSF space within the optic nerve sheath. Dural sinuses show patent and no evidence of occlusion.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. No evidence of acute ischemic or hemorrhagic lesion. No abnormal enhancement.2. No brain MR evidence of increased intracranial pressure.3. Normal brain MRA 