Stenosis

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stenosis

[stə′nō·səs]
(medicine)
Constriction or narrowing, as of the heart or blood vessels.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Stenosis

 

the narrowing of a physiological opening or the lumen of a tubular organ. Examples of the former include stenosis of the left atrioventricular orifice of the heart, or mitral stenosis. Examples of the latter include stenosis of the intestine, trachea, bronchi, arteries, or pylorus of the stomach (pylorostenosis).

Stenoses may be congenital (developmental anomalies) or acquired, in which case they may be caused by a tumor or by scarring following an inflammatory process, ulcer, or trauma. Organic strictures are distinguished from functional stenoses, which result from a spasm of the musculature. Severe stenosis hampers the movement of blood, food, and air, and consequently the musculature of the organ located above the stenosis hypertrophies (compensated stenosis). Later, muscle tone decreases, the lumen of the organ above the stricture enlarges substantially, and the movement through the narrowed part becomes disrupted (decompensated stenosis).

Stenosis is treated surgically by enlarging the affected orifice, as in some cases of heart disease, by passing a bougie through the structure involved, by excising the constricted part, or by performing plastic surgery.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Clinical characteristic and treatment outcomes of cryptogenic multifocal ulcerous stenosing enteritis in Korea Dig Dis Sci 2015; 60: 2740-5.
Cryptogenic multifocal ulcerous stenosing enteritis: an atypical type of vasculitis or a disease mimicking vasculitis.
However, to our knowledge, stenosing tenosynovitis of the FHL by the plantar capsular accessory ossicle presenting with limited IPJ flexion has not been previously reported.
The MILLER technique was originally described in 2006 and consists in performing a stenosing ligature and calibrating the stenosis by means of a 4-5 mm balloon placed inside the vein, which means a fixed diameter of the vein for all patients [11].
Tycova et al., "Severe cryptogenic multifocal ulcerous stenosing enteritis.
Stenosing tendovaginitis at the radial styloid process.
Surgical treatment and results of healing of de Quervain stenosing tenovaginitis.
Stenosing tenosynovitis of flexors tendons, or trigger finger, is common in adults but rare in children.
Stenosing tenosynovitis of the flexor hallucis longus tendon at the sesamoid area.
Of 61 patients with nonstenosing and nonpenetrating disease at diagnosis, 14 had stenosing disease and 23 had penetrating disease at 20 years follow-up.
Occurrence of de Quervain's Disease in Postpartum Women De Quervain's disease (syndrome, tendinitis, tenosynovitis, tendovaginitis) is stenosing tenosynovitis of the abductor pollicis longus and extensor pollicis brevis tendons at the radial styloid process.