Hilum overlay sign
Hilum Overlay Sign
The Hilum Overlay Sign (pronunciation: /ˈhaɪləm ˈoʊvərˌleɪ saɪn/) is a radiological sign used in the field of medicine to identify certain lung conditions.
Etymology
The term "Hilum Overlay Sign" is derived from the Latin word "hilum", meaning a small natural hole or opening, and the English words "overlay", meaning to cover or lay on top of something, and "sign", referring to an indication of a particular disease or condition.
Definition
The Hilum Overlay Sign is a diagnostic tool used in radiology to differentiate between a mass in the mediastinum and a mass in the lung. If a mass appears to overlay the hilum on a frontal chest radiograph, it is likely to be located within the mediastinum. If it does not overlay the hilum, it is likely to be within the lung.
Related Terms
- Mediastinum: The central compartment of the thoracic cavity. It contains the heart, the great vessels of the heart, thymus, esophagus, trachea, phrenic nerve, cardiac nerve, thoracic duct, lymph nodes of the central chest, and others.
- Radiology: The science of high energy radiation and of the sources and chemical reactions of radiation; especially : the medical application of controlled radiation to diagnose and treat disease.
- Hilum: The part of an organ where vessels and nerves enter and leave, typically in the shape of a depression or slit.
External links
- Medical encyclopedia article on Hilum overlay sign
- Wikipedia's article - Hilum overlay sign
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