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The thyroid, located at the base of the neck, produces thyroxine (T4) and triiodothyronine (T3), two important hormones containing iodine. T4 and T3 stimulate skeletal growth, nerve tissue and blood cells, promote nutrient metabolism and heat production, and much more. Their production is controlled by TSH, a hormone produced by the pituitary gland, located at the base of the brain. The secretion of TSH by the pituitary gland is modulated by factors related to the body’s needs, especially the levels of T4 and T3 circulating in the blood. When T4 and T3 levels are too low to meet the body’s needs (hypothyroidism), the pituitary gland reacts by secreting more TSH to overstimulate the thyroid. As soon as T4 and T3 levels are restored, pituitary gland secretion returns to normal. Conversely, if T4 and T3 levels are too high (hyperthyroidism, overmedication), the pituitary gland completely stops producing TSH.

The term myxedema has been applied to several clinical entities and is often used interchangeably with severe hypothyroidism, the common clinical condition in which the thyroid gland produces abnormally low levels of hormones. Myxedema also refers to 2 different dermatologic conditions.

Chapter 4 - Endocrine, nutritional and metabolic diseases (E00-E89) » Disorders of thyroid gland (E00-E07) » Atrophy of thyroid (acquired) (E03.4)

C00Malignant neoplasm of lipC00.0External upper lipC00.1External lower lipC00.2External lip, unspecifiedC00.3Upper lip, inner aspectC00.4Lower lip, inner aspectC00.5Lip, unspecified, inner aspectC00.6Commissure of lipC00.8Overlapping lesion of lipC00.9Lip, unspecifiedC01Malignant neoplasm of base of tongueC02Malignant neoplasm of other and unspecified parts of tongueC02.0Dorsal surface of...

Using the official codes from the 10th volume of the International Classification of Diseases, or ICD-10, helps update doctors in every medical field on the current data of common and rare medical...

Our thoughts and behaviors are strongly influenced by affective experiences known as drive states. These drive states motivate us to fulfill goals that are beneficial to our survival and reproduction. This module provides an overview of key drive states, including information about their neurobiology and their psychological effects.

​The whole world knows the city of Honolulu , but not many people know what it means.  No one knows for certain - because even the Hawaiian people aren’t completely positive.  They’re fairly...

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In 36 women with polycystic ovary syndrome and clomiphene citrate resistance, letrozole, an aromatase inhibitor, statistically significantly increased the ovulation rate by 33.3% in the treatment group, indicating that letrozole can be used as an effective and simple alternate ovulation-inducing age …

In men with impaired semen parameters, empiric medical therapies such as clomiphene citrate, a selective estrogen receptor modulator (SERM), and anastrozole, a selective aromatase inhibitor, are often employed. The effects of jointly administering ...