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Enlarged Adenoids 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 adenoids?

The adenoids are a pad of lymphoid tissue in the nasopharynx, the space behind the nose above the soft palate. Together with the tonsils, they form part of the immune system's first line of defense against inhaled germs. Adenoids grow during early childhood, usually reach their largest size between about three and seven years, and then gradually shrink. Enlargement (adenoid hypertrophy) can narrow the airway and block the openings of the Eustachian tubes.

Symptoms

• Persistent mouth breathing and a blocked nose
• Loud snoring, restless sleep or pauses in breathing
• Nasal-sounding (hyponasal) voice
• Chronic runny nose and postnasal drip
• Recurrent ear infections or fluid behind the eardrum causing reduced hearing
• Daytime tiredness, behavior or concentration difficulties from poor sleep

Causes

Adenoids enlarge naturally in response to frequent childhood infections and allergens. Allergic rhinitis, exposure to cigarette smoke and air pollution, and recurrent upper respiratory infections can make them larger or more persistent. Enlarged adenoids often occur together with enlarged tonsils.

In adults, adenoid tissue is usually minimal; a persistent mass in the nasopharynx in an adult requires evaluation to exclude other conditions.

How it is diagnosed at our Gangnam clinic

Dr. Kim can view the adenoids directly with a thin, flexible nasal endoscope, which most children tolerate with a numbing spray and encouragement. A lateral neck X-ray, similar to a cephalogram airway X-ray, shows adenoid size relative to the airway without any scope. If ear symptoms are present, tympanometry and a hearing test check for fluid in the middle ear. A sleep study may be recommended if sleep apnea is suspected.

Treatment options

Watchful waiting and medication

• Many children improve as the adenoids naturally shrink with age.
• Intranasal corticosteroid sprays can reduce adenoid size and congestion in some children.
• Treating allergies and reducing smoke exposure helps.
• Saline sprays keep the nose clear.

Surgery

Adenoidectomy, removal of the adenoids, is considered for children with obstructive sleep apnea, persistent severe nasal obstruction, or recurrent ear fluid and infections, often combined with ventilation tubes or tonsillectomy. Pediatric adenoidectomy is performed under general anesthesia, so when it is indicated we refer children to a hospital with pediatric anesthesia facilities and continue to support families with assessment and follow-up.

When to see an ENT

Book an assessment if your child breathes through the mouth most of the time, snores loudly most nights, has repeated ear infections or seems to hear poorly. Seek prompt care if you notice pauses in breathing during sleep, poor growth, or a child who struggles to breathe.

Seeing Dr. Kim in English

Expat families often worry about explaining a child's symptoms in Korean. Dr. Kim Yoo Suk, a board-certified ENT and former Yonsei and Ajou professor, examines children and explains the findings to parents in English. Read our international families guide before your visit.

Frequently asked questions

Do enlarged adenoids go away on their own?

Often yes. Adenoids typically shrink after about age seven and are usually very small by adolescence. If symptoms are mild, watching and using a nasal steroid spray may be enough. Significant sleep apnea or ear problems may justify earlier treatment.

Can enlarged adenoids affect my child's hearing?

Yes. Large adenoids can block the Eustachian tubes, leading to fluid behind the eardrums and temporary hearing loss. This may affect speech or school performance. Tympanometry and hearing tests can check for this.

Is adenoid removal done at your clinic?

Pediatric adenoidectomy requires general anesthesia, so when it is needed we refer children to an appropriate hospital. Dr. Kim provides the diagnosis, explains the options in English and can continue follow-up care after surgery.

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.