Treatments: Subglottic and Tracheal Stenosis

This page describes the endoscopic and open surgical treatments for narrowing of the airway below the voice box, and long-term monitoring.

This page describes the treatments used for narrowing of the windpipe just below the voice box (the subglottis) and in the windpipe itself (the trachea), called subglottic stenosis or tracheal stenosis. When no clear cause is found, it is called idiopathic subglottic stenosis. The condition itself is described on the subglottic stenosis conditions page.

There is no single "best" treatment that fits everyone. The choice depends on where the narrowing is, how severe and how long it is, whether the cartilage of the airway is involved, a person's overall health and voice needs, and personal preferences. Treatment is usually managed by an ear, nose and throat (ENT) surgeon, a thoracic (chest) surgeon or an interventional pulmonologist, often working together.

The Two Broad Categories of Treatment

• Endoscopic (minimally invasive) treatments are done through the mouth with no skin incision, using a scope and specialized instruments. These open the airway but do not remove the underlying scar. They are generally first-line for many patients because they are lower-risk and preserve the voice, but the narrowing often comes back over time.

• Open airway surgery removes or rebuilds the narrowed segment through an incision in the neck. It is more involved but is the most durable option, with the lowest rate of the narrowing coming back.

Many people are managed with a combination of approaches over the years.

Endoscopic Dilation (Balloon or Rigid)

Dilation stretches open the narrowed part of the airway. A balloon can be passed to the narrow spot and inflated, or rigid instruments of increasing size can be used to widen it. Dilation is the most common first treatment and is often combined with the other endoscopic methods below.

• It is quick, preserves the voice and can be repeated as needed.

• It treats the narrowing but does not cure it, so the airway tends to re-narrow over time and repeat procedures are common.

• Across studies, endoscopic treatments open the airway successfully in most patients, but the narrowing returns in a majority of people within a few years, and balloon dilation on its own tends to have one of the higher return rates.

Preparation is described in the tracheal and subglottic dilation surgery packet, and recovery on the airway balloon dilation recovery page.

Laser or "Cold Knife" Incisions

Instead of only stretching the airway, precise cuts can be made in the scar tissue, using a laser (such as a CO2 laser) or a small knife, before dilating. These radial incisions release the tight band of scar.

• This is often used for moderate narrowing and is frequently combined with dilation and with steroid or other medication.

• Compared with dilation alone, laser incision combined with medical therapy may lengthen the time before another procedure is needed.

Steroid Injection in the Operating Room

During an endoscopic procedure, a steroid medication (commonly triamcinolone) can be injected directly into the scar tissue. Steroids soften scar and reduce inflammation, which may slow re-narrowing. This is used as an add-on to dilation and laser treatment.

In-Office Serial Steroid Injections (Awake, Without Surgery)

A newer approach gives steroid injections into the narrowed area while the patient is awake in the clinic, without going to the operating room. These are given as a series of injections spaced a few weeks apart, and may be repeated in rounds over time.

• The injections are delivered through the front of the neck or through the nose using a scope, and do not require general anesthesia.

• Studies suggest this approach can improve breathing measurements, lengthen the time between surgeries and may reduce how often the narrowing comes back, with few serious side effects reported.

• It is generally considered a helpful add-on (adjunctive) therapy rather than a stand-alone cure, and treatment plans vary from center to center.

Adjuvant Medical Therapy

Medicines are often added to procedures to help the airway stay open longer. These can include inhaled steroids, acid-reflux medication (such as a proton pump inhibitor) and sometimes an antibiotic. A medication called mitomycin C is sometimes applied to the scar site during surgery. Treating acid reflux and other contributing conditions is an important part of long-term care, and close adherence to prescribed medications has been linked to longer intervals between procedures.

Open Airway Reconstruction and Resection

When the narrowing keeps coming back, is long or severe, or involves the cartilage, open surgery through the neck may be considered. The main operations are:

• Cricotracheal resection or tracheal resection: the narrowed segment of the airway is removed and the healthy ends are sewn back together. This is considered the most definitive treatment, with the lowest chance of the narrowing returning. Most patients breathe much better afterward and report improved quality of life.

• Laryngotracheal reconstruction: instead of removing the segment, the airway is widened using a graft (often the patient's own cartilage, such as from a rib). This is used in certain cases, including when the voice box area is involved or when earlier treatments have failed.

Open surgery is a bigger operation with a longer recovery and a real chance of complications. Because the surgery is near the voice box, some patients notice voice changes afterward, and voice outcomes can be a trade-off compared with endoscopic treatment. Even so, the great majority of carefully selected patients have a lasting, successful result, and most who had a breathing tube (tracheostomy) beforehand can have it removed.

Tracheostomy (Breathing Tube in the Neck)

A tracheostomy is a surgical opening in the neck that places a breathing tube directly into the windpipe, bypassing the narrowed area. It is not a cure for the narrowing itself.

• It may be needed urgently if the airway becomes dangerously blocked, or as a temporary measure to secure breathing before or between other treatments.

• It is sometimes used longer-term for people who are not candidates for other surgery.

• In staged reconstruction operations, a tracheostomy may be placed temporarily and removed later once the airway has healed.

Recovery is described on the tracheostomy recovery page.

Recurrence: The Narrowing Can Come Back

This condition tends to recur, especially after endoscopic treatments. Many patients need more than one procedure over the years, and repeat treatment is normal rather than a sign of failure.

• After endoscopic treatments, the narrowing commonly returns within one to a few years, and a large share of patients will need another procedure.

• Open surgical removal of the narrowed segment has by far the lowest recurrence rate and the longest time before any further treatment is needed.

• Adding medication and steroid therapy to endoscopic procedures can lengthen the time between treatments.

Treatment is best thought of as ongoing management of a long-term condition rather than a one-time fix.

Surveillance: Ongoing Monitoring

Regular follow-up is a key part of care, even when breathing feels normal. Monitoring allows re-narrowing to be caught early, often before it becomes severe, so the next step can be planned calmly rather than in an emergency.

• Follow-up visits may include breathing tests (such as peak flow or spirometry), examination of the airway with a scope in the clinic, and sometimes imaging.

• Keeping track of symptoms, such as noisy breathing, shortness of breath with activity or a change in exercise tolerance, helps signal when it is time to be seen.

• Managing contributing factors, including reflux and other medical conditions, supports longer-lasting results.

Questions Often Discussed With the Care Team

• Which treatments fit the location and severity of the narrowing?

• What are the trade-offs between a less invasive procedure that may need repeating and a bigger surgery that lasts longer?

• How might each option affect the voice and swallowing?

• How often will follow-up and breathing tests happen?

• What symptoms call for an urgent call or visit?