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Thyroid dysfunction after combined therapy for laryngeal cancer: a prospective study

Seyhan Alkan1, Serdar Baylancicek, Memet Ciftçic

  • 1Department of Otorhinolaryngology and Head and Neck Surgery, Sişli Etfal Teaching and Research Hospital, Istanbul, Turkey. seyhanalkan@hotmail.com

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|December 2, 2008
PubMed
Abstract

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Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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