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Postradiation therapy hypopituitarism

Postradiation therapy hypopituitarism The increasing use of radiation treatment for head and neck cancers and other tumors, including pituitary adenomas, from the mid-20th Century onwards led to the recognition that pituitary function may be affected – often leading to some degree of pituitary insufficiency. Our knowledge is mostly based on observational or retrospective rather than randomized prospective studies. The various axes may be impacted at the hypothalamic or pituitary levels, or both. Some axes – the somatotropic and gonadotropic – appear to be especially vulnerable to radiation damage and may be affected quite early, whereas posterior pituitary function is rarely affected. Increased use of stereotactic radiosurgery, which focuses the radiation dose on the abnormal tissue, may be expected to reduce the impact on normal pituitary function, but such studies that are available are, as yet, relatively short term. Prospective studies of the effect of stereotactic radiosurgery on pituitary function would be valuable. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Expert Review of Endocrinology & Metabolism Taylor & Francis

Postradiation therapy hypopituitarism

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References (118)

Publisher
Taylor & Francis
Copyright
© Expert Reviews Ltd
ISSN
1744-8417
eISSN
1744-6651
DOI
10.1586/eem.10.82
Publisher site
See Article on Publisher Site

Abstract

The increasing use of radiation treatment for head and neck cancers and other tumors, including pituitary adenomas, from the mid-20th Century onwards led to the recognition that pituitary function may be affected – often leading to some degree of pituitary insufficiency. Our knowledge is mostly based on observational or retrospective rather than randomized prospective studies. The various axes may be impacted at the hypothalamic or pituitary levels, or both. Some axes – the somatotropic and gonadotropic – appear to be especially vulnerable to radiation damage and may be affected quite early, whereas posterior pituitary function is rarely affected. Increased use of stereotactic radiosurgery, which focuses the radiation dose on the abnormal tissue, may be expected to reduce the impact on normal pituitary function, but such studies that are available are, as yet, relatively short term. Prospective studies of the effect of stereotactic radiosurgery on pituitary function would be valuable.

Journal

Expert Review of Endocrinology & MetabolismTaylor & Francis

Published: Mar 1, 2011

Keywords: corticotropin; gonadotropins; growth hormone; hypopituitarism; precocious puberty; radiation; radiosurgery; thyrotropin

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