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Enlarged Tonsils Evaluation in Gangnam, Seoul

Medically reviewed by Dr. Kim Yoo Suk, MD · Board-certified otolaryngologist · Former professor, Yonsei & Ajou University · Consultations in English

What are enlarged tonsils?

Enlarged tonsils, known medically as tonsillar hypertrophy, are palatine tonsils that take up more space in the throat than usual. Doctors often grade size on a scale from 1 to 4 based on how much of the airway between the tonsils is filled. Grade 1 tonsils sit within their pillars; grade 4 tonsils almost meet in the middle ("kissing tonsils").

Large tonsils are common in children, whose lymphoid tissue is naturally active, and often shrink with age. In adults, persistent enlargement is less common and is always worth checking.

Symptoms

• Loud snoring, often with mouth breathing
• Pauses in breathing during sleep, restless sleep or daytime sleepiness
• Difficulty swallowing solid foods
• Muffled or "thick" speech
• Frequent throat infections or bad breath

Causes

Common causes include repeated tonsillitis, chronic inflammation, allergies and natural lymphoid growth in childhood. Infectious mononucleosis can cause temporary, dramatic swelling. In adults, enlargement of one tonsil only (asymmetry) needs evaluation to exclude a tumor such as lymphoma, although most cases turn out to be benign.

How it's diagnosed at our Gangnam clinic

Dr. Kim grades the tonsils on oral examination and checks the neck for lymph nodes. Because airway obstruction often happens at more than one level, he also looks at the nose and nasopharynx with nasal endoscopy, which can reveal a deviated septum, turbinate swelling or enlarged adenoids. For patients with snoring or suspected apnea, the evaluation may include a cephalogram airway X-ray and a sleep study (polysomnography) to measure how often breathing is disrupted at night.

Treatment options

Observation and medical care

Enlarged tonsils that cause no symptoms usually need no treatment. When inflammation or allergy contributes, treating infections and nasal allergies can help. Weight management, sleeping position and avoiding alcohol before bed may reduce snoring.

Surgery

Tonsillectomy is considered when enlarged tonsils contribute to obstructive sleep apnea, cause swallowing difficulty, are associated with frequent infections, or are asymmetric with suspicion of a tumor. In adults with snoring, the clinic looks at the whole airway; nasal procedures or a combination approach described on our snoring surgery page may be more appropriate than tonsil removal alone.

When to see an ENT

See an ENT if you or your partner notice loud snoring with breathing pauses, if swallowing is difficult, or if one tonsil is clearly larger than the other. Seek prompt care for rapidly enlarging tonsils, a neck mass, unexplained weight loss, night sweats, or breathing difficulty.

Seeing Dr. Kim in English

Dr. Kim Yoo Suk published research on outcomes of obstructive sleep apnea surgery while on faculty at Ajou University, and he previously taught at Yonsei. As a rhinology subspecialist who also manages throat and ear disorders, he evaluates the nose and throat together and explains his findings in English. Visitors new to Seoul can read our guide for international patients.

Frequently asked questions

Do enlarged tonsils always need to be removed?

No. Many people have large tonsils without problems. Removal is considered when they cause sleep apnea, swallowing difficulty, frequent infections, or when one side is enlarged and a tumor must be ruled out.

Why is only one of my tonsils swollen?

Mild asymmetry is common and often due to infection, scarring or how the tonsils sit. However, persistent one-sided enlargement in an adult should be examined by an ENT to rule out an abscess or tumor, particularly with pain, weight loss or a neck lump.

Can enlarged tonsils cause snoring in adults?

Yes. Large tonsils narrow the airway at the back of the throat, which can cause snoring and sleep apnea. In adults, nasal obstruction and soft palate shape often contribute too, so the whole airway is evaluated before choosing treatment.

This page is general medical information written and reviewed by an ENT specialist. It is not a diagnosis. Symptoms differ between people — please see a doctor for an examination. In an emergency in Korea, call 119.