Brown tumor
Brown Tumor
Brown tumor (== Template:IPA ==
The Template:IPA (International Phonetic Alphabet) is a system of phonetic notation based primarily on the Latin alphabet. It was devised by the International Phonetic Association in the late 19th century as a standardized representation of the sounds of spoken language.
Pronunciation
The pronunciation of the term "IPA" is /aɪ piː eɪ/ in English.
Etymology
The term "IPA" is an acronym for the International Phonetic Alphabet. The International Phonetic Association, founded in 1886, created the IPA to provide a single, universal system for the transcription of spoken language.
Related Terms
- Phonetic notation: A system used to visually represent the sounds of speech. The IPA is one type of phonetic notation.
- Phonetics: The study of the physical sounds of human speech. It is concerned with the physical properties of speech sounds (phonemes), and the processes of their physiological production, auditory reception, and neurophysiological perception.
- Phonology: The study of the way sounds function within a particular language or languages. While phonetics concerns the physical production, acoustic transmission and perception of the sounds of speech, phonology describes the way sounds function within a particular language or languages.
- Transcription (linguistics): The systematic representation of spoken language in written form. The source of the words transcribe and transcription, the term means "to write across" in Latin, and it's the process of converting spoken language into written form. In linguistics, this is often done using the IPA.
External links
- Medical encyclopedia article on Brown tumor
- Wikipedia's article - Brown tumor
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski) is a bone lesion that arises in settings of excess osteoclast activity, such as hyperparathyroidism. The name "brown tumor" comes from the characteristic brown color of the lesion, which is due to the accumulation of hemosiderin or blood breakdown products.
Etymology
The term "brown tumor" is derived from the characteristic brown color of the lesion, which is due to the accumulation of hemosiderin or blood breakdown products. The term "tumor" is derived from the Latin word 'tumere' which means 'to swell', and is commonly used in medicine to denote a swelling or a growth.
Definition
A brown tumor is a type of bone lesion that is caused by an increase in osteoclast activity. This increase in activity is often associated with conditions such as hyperparathyroidism, which results in an overproduction of parathyroid hormone (PTH). PTH stimulates osteoclasts, which are cells that break down bone tissue. This leads to the formation of a brown tumor.
Related Terms
- Osteoclast: A type of bone cell that breaks down bone tissue.
- Hyperparathyroidism: A condition characterized by an overproduction of parathyroid hormone (PTH), which can lead to the formation of a brown tumor.
- Hemosiderin: A type of iron-storage complex, the accumulation of which gives the brown tumor its characteristic color.
- Bone lesion: An abnormal change in the structure of a bone, such as a brown tumor.
See Also
- Osteitis fibrosa cystica: A skeletal disorder resulting from hyperparathyroidism, which can lead to the formation of brown tumors.
- Parathyroid hormone: A hormone produced by the parathyroid glands that regulates calcium levels in the blood and bone metabolism.
External links
- Medical encyclopedia article on Brown tumor
- Wikipedia's article - Brown tumor
This WikiMD dictionary article is a stub. You can help make it a full article.
Languages: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
Urdu,
বাংলা,
తెలుగు,
தமிழ்,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
European
español,
Deutsch,
français,
русский,
português do Brasil,
Italian,
polski