Male, 5 days old, with hypotonia. The cerebral and cerebellar hemispheres and brainstem show normal signal intensity and morphology. No restricted diffusion is seen.The pituitary gland is normal for age. The brainstem and cerebellar vermis are within normal limits. The cerebellar hemispheres are fully formed, and the cerebellar tonsils terminate above the foramen magnum. The corpus callosum is fully formed and intact. Pattern of white matter myelination is normal for age.No evidence of parenchymal edema, mass, or mass effect is seen. There is no evidence of intracranial hemorrhage or abnormal extra-axial fluid. The ventricular system is normal in caliber and morphology.
No acute intracranial abnormality.