Male, 9 months old, with nystagmus. Evaluate optic chiasm from mass or other pathology. The cerebral and cerebellar hemispheres and brainstem show normal signal intensity and morphology. No restricted diffusion is seen. No pathologic parenchymal or extra-axial enhancement is seen.No evidence of parenchymal edema, mass, or mass effect is seen. There is no intracranial hemorrhage or abnormal extra-axial fluid. The ventricular system is normal in caliber and morphology. The globes are round and symmetric. The extraocular muscles show normal morphology and pattern of enhancement. No abnormal signal or enhancement of the optic nerves, chiasm or tracts is detected.The pituitary gland is normal in size and pattern of enhancement. No sellar or suprasellar lesions are seen. The pituitary stalk sits at midline and enhances normally. The cavernous sinus and Meckel's caves are within normal limits.The corpus callosum is fully formed and intact. The pattern of white matter myelination is appropriate for age. The brainstem, cerebellar vermis, and cerebellar spheres are normal. No lesions of the pineal gland or tectum are suspected.Signal intensity of the bone marrow is unremarkable. No significant abnormalities of the paranasal sinuses are detected.
Evaluation of the brain, orbits and pituitary is within normal limits. No specific findings are seen which would account for the patient's symptoms.