POSTERIOR PITUITARY ECTOPIA AND HYPOPITUITARISM - MAGNETIC-RESONANCE APPEARANCES OF 4 CASES AND A REVIEW OF THE LITERATURE

In four patients presenting in childhood with varying degrees of hypop ituitarism, magnetic resonance imaging (MRI) shelved a reduction in si ze of the normal pituitary fossa contents and an absent or very narrow stalk. A high signal intensity, enhancing area at the base of the sta lk, having the appearances and signal characteristics of the posterior pituitary, was seen in each case. We discuss the case histories and M R findings in our patients and review the relevant literature.