Base of Tongue Reduction, Base of Tongue Coblation, & Lingual Tonsillectomy for Obstructive Sleep Apnea (OSA)

Base of Tongue Reduction (Base of Tongue Coblation)
& Lingual Tonsillectomy for Obstructive Sleep Apnea (OSA)
by Christopher Y. Chang, MD • Last Modified 5/14/2008

Obstructive sleep apnea (OSA) is often a multi-level upper airway disorder in which anatomic factors in the nose, oral cavity, and throat collectively leads to obstruction during sleep. Nasal factors include deviated septum, turbinate hypertrophy, and adenoid hypertrophy. Oral cavity factors include large tongue, large tonsils, and uvular-palatal hypertrophy. Factors in the throat include large base of tongue and rarely, problems related to the voicebox.

For several decades, there have been well established surgical procedures to address anatomical factors of the nose (septoplasty, turbinate reduction, adenoidectomy, etc) and oral cavity (UPPP, tonsillectomy, etc) that contribute to OSA. However, factors of the throat, particularly an enlarged base of tongue have been a difficult surgical problem to solve.

Where/What Exactly is the Base of Tongue?

The base of tongue is the back part of the tongue as it curves down into the throat (arrow in diagram). Lingual tonsils contribute to the size of this region as well (denoted by rough mucosa in the diagram right below where the arrow is pointing). In many patients suffering from OSA, this region is quite large and tends to collapse backward during sleep leading to obstruction. This may occur even in thin people. The only way to know if a patient has a large base of tongue is by fiberoptic laryngoscopy. It is impossible to tell if you have a large base of tongue by just looking in the mouth.

Another way to suspect a large base of tongue is when a patient has persistent OSA even if their nasal cavity and oral cavity is wide open. Often, these patients have persistent OSA in spite of having undergone a number of surgical procedures including septoplasty, adenoidectomy, turbinate reduction, and UPPP.

So How is Base of Tongue Reduction (and Lingual Tonsillectomy) Performed?

Base of tongue reduction is a relatively new method to reduce the overall size of this anatomic region. In the past, procedures were performed that attempted to resolve this problematic area in patients with OSA by indirectly moving and anchoring the tongue forward (hyoid advancement, genioglossal advancement, Repose procedure, mandibular advancement, etc). The tongue size itself was not addressed in any of these procedures.

Base of tongue reduction is the only method to actually directly address the size of this region rather than just shifting or manipulating the tongue position. In our practice, we use coblation to literally remove part of the base of tongue bulk without any external neck incisions.

The procedure is performed by making a 1cm incision in the center of the tongue and inserting the coblation wand through this incision and into the muscular bulk of the base of tongue as shown on the picture. With activation, the base of tongue tissue bulk is liquified and suctioned out. A good analogy to compare this procedure to would be liposuction, but instead of fat, muscle and tissue stroma are being removed. Although muscle is being removed with this procedure, swallowing and talking is no more affected than that experienced after tonsillectomy. Watch a YouTube video describing the procedure here. Because coblation is used, this procedure is also often called base of tongue coblation.

Lingual tonsillectomy is also performed by coblation but is performed external to the tongue. The procedure is performed by shaving the lingual tonsils slowly and carefully down to the tongue much like sanding down a piece of wood. Lingual tonsillectomy is also performed for bad breath resistant to other more conservative treatments.

What is the Recovery Like from Base of Tongue Reduction?

Patients report that the pain is roughly 75% of that experienced after tonsillectomy. Pain resolution, normal swallowing, and normal talking usually occurs after about 10 days. The procedure is performed under general anesthesia and typically takes about 15 minutes to perform. Due to the location of the surgery, patients typically spend one night in the hospital before being discharged home the next day.

Great! Am I a Candidate for Base of Tongue Reduction?

Generally speaking, those with AHI scores on sleep study >30 are candidates. Other candidates include those patients who have persistent OSA in spite of having had other surgical procedures done.

If you are interested in base of tongue reduction, please contact our office for an appointment with Dr. Chang. PLEASE bring the following information to your appointment to expedite your visit:

Sleep Study (Most Recent)
Operative reports on previous surgical procedures performed in the past to address OSA
CPAP usage

References

Coblation Lingual Tonsillectomy. Maturo SC, Mair EA. Otolaryngology-Head & Neck Surgery. 2006 Sep;135(3):487-488. Link

Submucosal minimally invasive lingual excision: an effective, novel surgery for pediatric tongue base reduction. Maturo SC, Mair EA. Ann Otol Rhinol Laryngol. 2006 Aug;115(8):624-30. Link

Combined uvulopalatopharyngoplasty and radiofrequency tongue base reduction for treatment of obstructive sleep apnea/hypopnea syndrome. Otolaryngol Head Neck Surg. 2003 Dec;129(6):611-21. Link

Any information provided on this Web site should not be considered medical advice or a substitute for a consultation with a physician. If you have a medical problem, contact your local physician for diagnosis and treatment.