 The craniocervical junction is within normal limits and there is no evidence of cerebellar ectopia. There is biphasic CSF flow through the foramen magnum both anterior and posterior to the cervical cord. Additionally, there is biphasic flow through the fourth ventricle and aqueduct of Sylvius. The ventricles and sulci are within normal limits. There is no diffusion abnormality to suspect acute stroke. No extra-axial fluid collection is identified.A small focus of susceptibility weighted artifact in the falx is noted and likely represents dural mineralization. Normal flow-voids are demonstrated in the major intracranial vascular structures. Scattered mucosal retention cysts and mild thickening are noted in the paranasal sinuses bilaterally. There is normal signal in the mastoid air cells.
1.No evidence of structural abnormality or abnormality of CSF flow. Specifically, no evidence of Chiari malformation.2.Mild mucosal thickening and retention cysts in all of the paranasal sinuses, please correlate with clinical exam for findings of sinusitis.