This MedLibrary.org supplementary page on Stenosis is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| Stenosis Classification and external resources |
|
 |
|
|---|---|
| CT scan of a bronchial stenosis (arrow) that resulted from tracheobronchial injury | |
| MeSH | D003251 |
A stenosis (plural: stenoses; from Ancient Greek στένωσις, "narrowing") is an abnormal narrowing in a blood vessel or other tubular organ or structure. It is also sometimes called a "stricture" (as in urethral stricture).
Stenoses of the vascular type are often associated with a noise (bruit) resulting from turbulent flow over the narrowed blood vessel. This bruit can be made audible by a stethoscope. Other, more reliable methods of diagnosing a stenosis are imaging methods including ultrasound, Magnetic Resonance Imaging/Magnetic Resonance Angiography, Computed Tomography/CT-Angiography which combine anatomic imaging (i.e. the visible narrowing of a vessel) with the display of flow phenomena (visualization of the movement of the bodily fluid through the bodily structure).
Contents |
Causes
- atherosclerosis causes stenotic lesions in arteries.
- birth defects
- ischemia
- infection
- neoplasm
- inflammation
- iatrogenic, e.g. secondary to radiation therapy
Types
The resulting syndrome depends on the structure affected.
Examples of vascular stenotic lesions include:
- Intermittent claudication (peripheral artery stenosis)
- Angina (coronary artery stenosis)
- Carotid artery stenosis which predispose to (strokes and transient ischaemic episodes)
- Renal artery stenosis
Stenoses/strictures of other bodily structures/organs include:
- Pyloric stenosis (gastric outflow obstruction)
- Obstructive jaundice (biliary tract stenosis)
- Bowel obstruction
- Phimosis
- Hydrocephalus
- Stenosing tenosynovitis
- Spinal stenosis
- Subglottic stenosis (SGS)
See also
External links
Wikipedia content modification information:
- This page was last modified on 19 July 2008, at 04:47.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Stenosis".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.