| thyroglossal cyst | <anatomy, embryology> A thyroglossal cyst is a fluid-filled sac that is present at birth and located in the midline of the neck. A thyroglossal cyst is a result of incomplete closure of a segent of a tube-like structure (the thyroglossal duct) that is present, and normally closes, as the embryo develops. Synonym: thyrolingual cyst. (07 Mar 2000) |
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| thyroglossal duct | A transitory endodermal tube in the embryo, carrying thyroid-forming tissue at its caudal end; normally, the duct disappears after the thyroid has moved to its definitive location in the neck; its point of origin is regularly marked on the root of the adult tongue by the foramen caecum; occasionally, its incomplete regression results in the formation of cysts along its embryonic course. See: pyramidal lobe of thyroid gland. Synonym: ductus thyroglossus, thyrolingual duct. (05 Mar 2000) |
| thyroglossal duct cyst | A cyst in the midline of the neck resulting from nonclosure of a segment of the ductus thyroglossus. Synonym: cervical cyst. (05 Mar 2000) |
| thyrohyal | <anatomy> One of the lower segments in the hyoid arch, often consolidated with the body of the hyoid bone and forming one of its great horns, as in man. Source: Websters Dictionary (01 Mar 1998) |
| thyrohyoid | <anatomy> Of or pertaining to the thyroid cartilage of the larynx and the hyoid arch. Source: Websters Dictionary (01 Mar 1998) |
| thyrohyoid membrane | A thin, fibrous, membranous sheet filling the gap between the hyoid bone and the thyroid cartilage. Synonym: membrana thyrohyoidea, membrana hyothyroidea. (05 Mar 2000) |
| thyrohyoid muscle | <anatomy> Apparently a continuation of the sternothyroid; origin, oblique line of thyroid cartilage; insertion, body of hyoid bone; action, approximates hyoid bone to the larynx; nerve supply, upper cervical spinal nerves carried by hypoglossal. Synonym: musculus thyrohyoideus. (05 Mar 2000) |
| thyrohypophysial syndrome | <syndrome> Hypopituitarism arising from a severe circulatory collapse postpartum, with resultant pituitary necrosis. Synonym: postpartum pituitary necrosis syndrome, thyrohypophysial syndrome. (05 Mar 2000) |
| thyroid | A butterfly-shaped endocrine gland in the neck that is found on both sides of the trachea (windpipe). It secretes the hormone thyroxine which controls the rate of metabolism. (27 Sep 1997) |
| thyroid acropachy | <radiology> Periosteal reaction, metacarpals, long bones of lower limbs, pretibial myxoedema, exophthalmos, prob secondary to long-standing exposure to LATS, 0.5 - 10% of patients after thyroidectomy for thyrotoxicosis (12 Dec 1998) |
| thyroid axis | A short arterial trunk arising from the subclavian artery, giving rise to the suprascapular (which may instead arise directly from the subclavian artery) and terminating by dividing into the ascending cervical and inferior thyroid arteries. Synonym: truncus thyrocervicalis, thyroid axis. (05 Mar 2000) |
| thyroid binding globulin | <protein> Thyroid binding globulin (TBG) is a plasma protein which binds the majority of thyroid hormone in the bloodstream. Bound thyroid hormone is inactive, only the unbound fraction (0.3%) is considered active. Birth control pills and pregnancy can lead to increased TBG levels in the plasma. Androgens can decrease TBG levels in the plasma. (27 Sep 1997) |
| thyroid body | A butterfly-shaped endocrine gland in the neck that is found on both sides of the trachea windpipe). It secretes the hormone thyroxine which controls the rate of metabolism. (27 Sep 1997) |
| thyroid bruit | Vascular murmur heard over hyperactive thyroid gland, due to increased blood flow. (05 Mar 2000) |
| thyroid calcifications | <radiology> Miliary calcification, psammoma bodies, papillary thyroid carcinoma, extensive calcification, nodular goiter (12 Dec 1998) |
Synonyms : Generalized Thyroid Hormone Resistance, Refetoff-DeWind-DeGroot Syndrome, Thyroid Hormone Resistance, Hormone Resistance, Thyroid, Refetoff DeWind DeGroot Syndrome, Resistance, Thyroid Hormone, Syndrome, Refetoff, Syndrome, Refetoff-DeWind-DeGroot
Synonyms : Hormones, Thyroid
Synonyms : Cancer of the Thyroid, Neoplasms, Thyroid, Thyroid Adenoma, Thyroid Carcinoma, Adenoma, Thyroid, Cancer, Thyroid, Carcinoma, Thyroid, Neoplasm, Thyroid, Thyroid Neoplasm
Synonyms : Nodule, Thyroid, Nodules, Thyroid, Thyroid Nodules
Synonyms : Thyroidectomies
| thymus |
An organ that is part of the lymphatic system, in which T lymphocytes grow and multiply. The thymus is in the chest behind the breastbone.
출처: www.stjude.org/glossary
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| thyroid |
A gland located beneath the voice box (larynx) that produces thyroid hormone. The thyroid helps regulate growth and metabolism.
출처: www.stjude.org/glossary
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| thyroid-stimulating hormone |
TSH. A hormone produced by the pituitary gland. TSH stimulates the release of thyroid hormone from thyroglobulin. It also stimulates the growth of thyroid follicular cells. An abnormal TSH level may mean that the thyroid hormonal regulation system is out of control, usually as a result of a benign condition (hyperthyroidism or hypothyroidism).
출처: www.stjude.org/glossary
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| thyroidectomy |
Surgery to remove part or all of the thyroid.
출처: www.stjude.org/glossary
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| thyroxin |
a hormone produced by the thyroid gland that helps regulate energy production in the body
출처: www.american-depot.com/services/resources_gl_t.asp
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