Asteroid body
Asteroid body
Asteroid bodies (pronunciation: /ˈæstəˌrɔɪd ˈbɒdi/) are star-shaped, eosinophilic structures found within giant cells in certain diseases, most notably sarcoidosis. The term "asteroid" comes from the Greek words "aster" (star) and "eidos" (form or shape), referring to their star-like appearance.
Etymology
The term "asteroid body" is derived from the Greek words "aster" meaning star, and "eidos" meaning form or shape. This is due to the star-like appearance of these structures when viewed under a microscope.
Related Terms
- Giant cell: A large cell, often formed by the fusion of smaller cells, that contains multiple nuclei. Giant cells are often found in granulomas and are a common site for asteroid bodies.
- Sarcoidosis: A disease involving abnormal collections of inflammatory cells that form lumps known as granulomas. Asteroid bodies are often found in the giant cells of sarcoidosis granulomas.
- Granuloma: A structure formed during inflammation that is found in many diseases. It is often composed of macrophages, giant cells, and other immune cells.
- Eosinophilic: Referring to cells or material that stain readily with eosin, a red acidic dye. Asteroid bodies are described as eosinophilic due to their staining properties.
See Also
External links
- Medical encyclopedia article on Asteroid body
- Wikipedia's article - Asteroid body
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