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Case 102: Pituitary Aplasia¹

¹ From the Department of Radiology, Miami Children's Hospital, 3100 SW 62nd Ave, Miami, FL 33155. Received December 15, 2003; revision requested February 19, 2004; revision received May 25; accepted June 15; final version accepted October 20.

View larger version (154K): [in this window] [in a new window] [Download PPT slide]   Figure a: (a) Sagittal and (b) coronal T1-weighted MR images (repetition time msec/echo time msec, 500/12; section thickness, 3 mm) obtained through the sella show absence of the anterior pituitary gland. The absence of a high-signal-intensity area indicates that the posterior pituitary gland is not seen in either the sella or the hypothalamic region. The sella turcica (arrow) is flattened and shallow. The optic chiasm (arrowhead) is normal in size and morphology. (c) Transverse T1-weighted MR image (525/10; section thickness, 3 mm) obtained through the suprasellar region shows that there is no pituitary stalk, but there are normal optic nerves (arrowheads).

View larger version (144K): [in this window] [in a new window] [Download PPT slide]   Figure b: (a) Sagittal and (b) coronal T1-weighted MR images (repetition time msec/echo time msec, 500/12; section thickness, 3 mm) obtained through the sella show absence of the anterior pituitary gland. The absence of a high-signal-intensity area indicates that the posterior pituitary gland is not seen in either the sella or the hypothalamic region. The sella turcica (arrow) is flattened and shallow. The optic chiasm (arrowhead) is normal in size and morphology. (c) Transverse T1-weighted MR image (525/10; section thickness, 3 mm) obtained through the suprasellar region shows that there is no pituitary stalk, but there are normal optic nerves (arrowheads).

View larger version (145K): [in this window] [in a new window] [Download PPT slide]   Figure c: (a) Sagittal and (b) coronal T1-weighted MR images (repetition time msec/echo time msec, 500/12; section thickness, 3 mm) obtained through the sella show absence of the anterior pituitary gland. The absence of a high-signal-intensity area indicates that the posterior pituitary gland is not seen in either the sella or the hypothalamic region. The sella turcica (arrow) is flattened and shallow. The optic chiasm (arrowhead) is normal in size and morphology. (c) Transverse T1-weighted MR image (525/10; section thickness, 3 mm) obtained through the suprasellar region shows that there is no pituitary stalk, but there are normal optic nerves (arrowheads).