alexa Hypopituitarism after external irradiation. Evidence for both hypothalamic and pituitary origin.
Cardiology

Cardiology

Atherosclerosis: Open Access

Author(s): Samaan NA, Bakdash MM, Caderao JB, Cangir A, Jesse RH Jr,

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Abstract Endocrine complications after radiotherapy for tumors of the head and neck are thought to be relatively rare. The availability of synthetic hypothalamic hormones for clinical investigations and the radioimmunoassay of hormones have enabled us to study function of the hypothalamic pituitary axis in 15 patients who had radiotherapy for nasopharyngeal cancer. Fourteen had evidence of endocrine deficiency. Twelve patients had evidence of hypothalamic dysfunction, 7 developed primary pituitary hormone deficiencies, and 3 developed primary hypothyroidism. These results indicate that [1] secondary hypopituitarism due to a hypothalamic lesion after radiotherapy for nasopharyngeal cancer may be more common than suspected in the past; [2] primary hypopituitarism after irradiation of extracranial tumors can occur; and [3[ primary hypothyroidism may result from irradiation of regional neck nodes.
This article was published in Ann Intern Med and referenced in Atherosclerosis: Open Access

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