Migraines. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The cerebellar tonsils extend up to 4 mm inferior to the foramen magnum, but display rounded contours. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is left frontal sinus mucosal thickening.
1. No evidence of acute intracranial hemorrhage, mass, or ventriculomegaly.2. The cerebellar tonsils are minimally low-lying and otherwise do not have features of Chiari type 1 malformation.3. Left frontal sinus mucosal inflammation.