Subglottic Stenosis

Airway narrowing in the lower portion of the larynx

Written by: Saygı Hospital Health Guide Editorial Board

Last updated: June 17, 2026

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our KBB (Kulak Burun Boğaz) department. Book Appointment →

What is Subglottic Stenosis?

Subglottic stenosis is a narrowing of the airway extending from just below the glottis to the upper trachea. The congenital form is rare, while acquired stenosis most often follows prolonged endotracheal intubation that produces mucosal injury and scar formation.

According to the Myer-Cotton classification the lesion is graded into four levels: grade I (0-50% obstruction) causes mild symptoms, whereas grade IV (99-100% obstruction) requires tracheotomy.

Treatment is tailored to severity and ranges from endoscopic balloon dilatation and laser resection to open laryngotracheal reconstruction.

Symptoms

Exertional dyspnoea

Inspiratory stridor

Recurrent croup-like episodes in children

Progressive shortness of breath on exertion

Hoarseness

Risk Factors

Prolonged endotracheal intubation

Previous tracheotomy

Gastro-oesophageal reflux

Autoimmune disease (e.g. granulomatosis with polyangiitis)

History of head-and-neck radiotherapy

Prematurity

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

Worsening shortness of breath with exercise
Persistent stridor after extubation
Recurrent croup-like attacks in a child
Progressive dyspnoea or noisy breathing

Treatment Methods

Endoscopic balloon dilatation

Laser resection of scar tissue

Laryngotracheal reconstruction

Crico-tracheal resection in selected cases

Anti-reflux therapy

Temporary tracheotomy when airway compromise is severe

Which Department to Visit?

You can visit our KBB (Kulak Burun Boğaz) department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About KBB (Kulak Burun Boğaz) Department

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You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.