Other namesStenoses
Bronchial stenosis CT.JPG
CT scan of a bronchial stenosis (arrow) that resulted from tracheobronchial injury

A stenosis (from Ancient Greek στενός, "narrow") 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).[3]

Stricture as a term is usually used when narrowing is caused by contraction of smooth muscle (e.g. achalasia, prinzmetal angina); stenosis is usually used when narrowing is caused by lesion that reduces the space of lumen (e.g. atherosclerosis).[citation needed] The term coarctation is another synonym,[4] but is commonly used only in the context of aortic coarctation.

Restenosis is the recurrence of stenosis after a procedure.


The resulting syndrome depends on the structure affected.

Examples of vascular stenotic lesions include:

The types of stenoses in heart valves are:

Stenoses/strictures of other bodily structures/organs include:

Other Languages
العربية: تضيق (طب)
беларуская: Стэноз
català: Estenosi
čeština: Stenóza
Deutsch: Stenose
eesti: Stenoos
español: Estenosis
français: Sténose
հայերեն: Ստենոզ
hrvatski: Stenoza
Bahasa Indonesia: Stenosis
italiano: Stenosi
қазақша: Стриктура
latviešu: Stenoze
Nederlands: Stenose
norsk: Stenose
norsk nynorsk: Stenose
ਪੰਜਾਬੀ: ਸਟੇਨੋਸਿਸ
polski: Stenoza
português: Estenose
română: Stenoză
русский: Стеноз
slovenčina: Stenóza
svenska: Stenos
українська: Стеноз