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Fig. 5B —17-year-old boy with growth hormone deficiency and anosmia.
(Reprinted with permission from Harnsberger H. Head and neck digital
teaching file. Salt Lake City, UT: Amirsys, 2002
[16]) Sagittal (A) and
coronal (B) unenhanced T1-weighted images through sella reveal
pituitary hypoplasia. Pituitary gland and sella turcica are small. Note
ectopic neurohypophyseal T1 hyperintensity (open arrow). Infundibular
stem is always abnormal; in this case, it is markedly attenuated (solid
arrow). Stalk may be well seen only after gadolinium administration.
Associated abnormalities are frequent, as in this patient in whom septum
pellucidum is absent.
