Journal
JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY
Volume 32, Issue 2, Pages 324-328Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/RCT.0b013e3181636ed4
Keywords
posttraumatic hypopituitarism; traumatic brain injury; diabetes insipidus
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Posttraumatic hypopituitarism is the failure of the hypothalamic-pituitary axis secondary to traumatic brain injury. It can clinically present as decreased muscle mass, concentration, libido, and fertility. It can also present as increased fatigue, depression, and cognitive deficits. In addition, electrolyte abnormalities such as hyponatremia can occur in hypopituitarism. As a result of heightened awareness of posttraumatic hypopituitarism, it is a phenomenon that is becoming more commonly diagnosed. Posttraumatic hypopituitarism is a diagnosis based on clinical evaluation, laboratory testing, and neuroimaging. Of the radiological techniques, magnetic resonance imaging is the preferred technique to image the pituitary gland. This article contains coronal and sagittal magnetic resonance imaging of the posterior fossa, illustrating the normal hypothalamus and pituitary gland as well as adjacent structures. The sequential enhancement pattern of the normal pituitary gland is consistent with its vascular supply. A colored illustration was created to display the vascular supply to the hypothalamus, pituitary stalk, and pituitary gland.
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