Stenosis - Related Links
Open Access Articles- Top Results for Stenosis
Journal of Gastrointestinal & Digestive SystemGastrojejunal Stenosis of Gastric Bypass in Laparoscopic Bariatric Surgery: Report of a Case
Metabolomics:Open AccessHigh Serum Concentration of Sulfatide is a Risk Factor for Restenosis in Patients with Coronary Heart Disease after Percutaneous Coronary Intervention
International Journal of Advanced Research in Electrical, Electronics and Instrumentation EnergyA Survey on Classifiers Used in Heart Valve Disease Detection
Journal of Vascular Medicine & SurgeryResearch of Numerical Simulation of Biomechanics on In-stent-restenosis
|File:Bronchial stenosis CT.JPG|
|Classification and external resources|
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). The term coarctation is a synonym, but is commonly used only in the context of aortic coarctation.
Restenosis is the recurrence of stenosis after a procedure.
Stenoses of the vascular type are often associated with unusual blood sounds resulting from turbulent flow over the narrowed blood vessel. This sound can be made audible by a stethoscope, but diagnosis is generally made or confirmed with some form of medical imaging.
- atherosclerosis causes stenotic lesions in arteries.
- birth defects
- iatrogenic, e.g. secondary to radiation therapy
- neoplasm – in such cases, the stenosis is often said to be "malignant" or "benign", although this attribute actually refers to the neoplasm itself.
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
The types of stenoses in heart valves are:
- Pulmonary valve stenosis, which is the thickening of the pulmonary valve, therefore causing narrowing
- Mitral stenosis, which is the thickening of the mitral valve (of the left heart), therefore causing narrowing
- Tricuspid valve stenosis, which is the thickening of the tricuspid valve (of the right heart), therefore causing narrowing
- Aortic valve stenosis, which is the thickening of the aortic valve, therefore causing narrowing
Stenoses/strictures of other bodily structures/organs include:
- Pyloric stenosis (gastric outflow obstruction)
- Lumbar, cervical or thoracic spinal stenosis
- Subglottic stenosis (SGS)
- Tracheal stenosis
- Obstructive jaundice (biliary tract stenosis)
- Bowel obstruction
- Non-communicating hydrocephalus
- Stenosing tenosynovitis