stenosis
Pronunciation: steh-NOH-sis
Abnormal narrowing of a blood vessel or other tubular organ that restricts blood flow.
Full Definition
Stenosis refers to the pathological narrowing of blood vessels, heart valves, or other tubular structures in the body that impedes normal flow. In vascular medicine, stenosis commonly affects arteries due to atherosclerotic plaque buildup, causing reduced blood flow to tissues and organs. The severity of stenosis is typically classified as mild (less than 50% narrowing), moderate (50-70% narrowing), or severe (greater than 70% narrowing). Vascular stenosis can occur in any artery but commonly affects the carotid, coronary, renal, and peripheral arteries, often requiring intervention to prevent complications.
Usage
Usage note: Specify location and severity percentage when documenting stenosis findings.
In Context
- "Duplex ultrasonography revealed 80% stenosis of the left internal carotid artery." — diagnostic imaging report
- "The patient developed in-stent stenosis six months after the initial angioplasty procedure." — follow-up examination