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What are the magnetic resonance imaging appearances of posterior pituitary ectopia in children with hypopituitarism?
What are the magnetic resonance imaging appearances of posterior pituitary ectopia in children with hypopituitarism?
MRI can identify posterior pituitary ectopia characterized by an absent or narrow stalk and an ectopic high-signal posterior pituitary in children with hypopituitarism.
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May aid recognition of posterior pituitary ectopia on MRI in hypopituitarism; leaves open confirmation in larger series.
In four patients presenting in childhood with varying degrees of hypopituitarism, magnetic resonance imaging (MRI) showed a reduction in size of the normal pituitary fossa contents and an absent or very narrow stalk. A high signal intensity, enhancing area at the base of the stalk, having the appearances and signal characteristics of the posterior pituitary, was seen in each case. We discuss the case histories and MR findings in our patients and review the relevant literature.
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Denton et al. (1996) studied this question.
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