GH deficiency, evaluate for pituitary abnormality The signal intensity in the brain parenchyma is normal. There is no mass, significant mass effect, or midline shift. The pituitary gland is normal in size with a normal posterior pituitary bright spot. There is no suprasellar abnormality. The midline structures are normal. The cerebellar tonsils are normal in position. There is lobulated CSF signal intensity posterior to the cerebellum in the extraaxial space, left greater than right, with associated prominent scalloping of the inner table of the calvarium. There is no evidence for intracranial hemorrhage or extra-axial collection. No diffusion-weighted abnormalities are identified. Flow voids are present within the major vessels indicating patency. There is mild mucosal thickening of the visualized ethmoid air cells. The adenoids are prominent, likely reactive.
1. Pituitary gland is normal in size with a normal pituitary bright spot and will be fully evaluated on future dedicated pituitary MRI. 2. Lobulated CSF signal intensity posterior to the cerebellum with associated scalloping of the inner table of the calvarium. Differential considerations include retrocerebellar cyst and mega cisterna magna.