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Hypophysitis: endocrinologic and dynamic MR findings

N Sato1, G Sze, K Endo

  • 1Department of Diagnostic Radiology, Gunma University School of Medicine, Maebashi, Japan.

AJNR. American Journal of Neuroradiology
|April 16, 1998
PubMed
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Dynamic MRI reveals pituitary vascular changes in lymphocytic hypophysitis, even when conventional MRI shows normal pituitary gland. This imaging technique aids in detecting subtle vascular abnormalities.

Area of Science:

  • Radiology
  • Endocrinology
  • Neuroimaging

Background:

  • Lymphocytic hypophysitis is an inflammatory condition affecting the pituitary gland.
  • Conventional MRI may not always detect subtle vascular changes associated with the disease.

Purpose of the Study:

  • To evaluate the utility of dynamic MR imaging in assessing pituitary vascular alterations in patients with lymphocytic hypophysitis.

Main Methods:

  • Five patients diagnosed with lymphocytic hypophysitis or infundibuloneurohypophysitis underwent multiple MRI examinations, including dynamic imaging.
  • Endocrinologic assessments were performed concurrently.

Main Results:

  • Dynamic MRI demonstrated delayed pituitary enhancement in all patients, indicating vascular abnormalities.

Related Experiment Videos

  • These vascular changes were detectable even when conventional MRI showed a normal pituitary or signs of regression.
  • Posterior pituitary enhancement was consistently delayed in dynamic studies.

    • Conclusions:

    • Dynamic MR imaging is valuable for detecting hypophysial vascular abnormalities in lymphocytic hypophysitis.
    • It can identify vascular issues not apparent on conventional MRI, even with disease regression.
    • Delayed enhancement may reflect secondary inflammatory vascular changes within the pituitary.