Male, 9 years old, presenting with hyponatremia, assess for anterior hypopituitarism and posterior pituitary deficiency presentation. 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 detected.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. The posterior pituitary gland is ectopic located not within the sella but along the undersurface of the hypothalamus. The pituitary infundibulum is absent. The anterior pituitary gland is slightly small but this can be normal for age. No discrete pituitary lesions are seen. No abnormalities of the cavernous sinus or Meckel's caves are suspected. There are no suprasellar mass lesions detected. The visualized optic apparatus is within normal limits.Signal intensity of the bone marrow is unremarkable. No significant abnormalities of the paranasal sinuses are detected.
1.Ectopia of the posterior pituitary gland is again seen, in agreement with findings noted on the prior study. 2.The anterior pituitary gland is slightly small which can be normal for age, otherwise unremarkable.3.Remainder of the brain evaluation is within normal limits.