An adenoidectomy is a surgery to remove the adenoids, small glands located behind the nasal passage that help fight infections in young children. It’s one of the most common childhood surgeries, typically performed when swollen or chronically infected adenoids cause breathing problems, repeated ear infections, or chronic sinus issues. The procedure itself is quick, usually under 30 minutes, and most children go home the same day.
What Adenoids Do and Why They’re Removed
Adenoids are part of the immune system and sit just above the soft palate, directly behind the nasal cavity. They trap bacteria and viruses that enter through the nose and mouth, and they produce antibodies to help fight off infections. White blood cells travel through the adenoid tissue, targeting and neutralizing germs before they can spread deeper into the body.
This role matters most in early childhood. By around age 8, adenoids naturally begin to shrink, and they typically disappear completely by adulthood. The body develops other immune defenses that take over the job. This is why adenoidectomy is overwhelmingly a pediatric procedure, though adults occasionally need one too.
The problem arises when adenoids become chronically swollen or infected. Because they sit right at the back of the nasal passage, enlarged adenoids can block airflow through the nose, interfere with the drainage tubes connecting the ears to the throat, and create a breeding ground for recurring infections. When these issues persist despite other treatments, removal becomes the most effective solution.
Common Reasons for Surgery
The three major reasons children get adenoidectomies are sleep-disordered breathing from nasal obstruction, chronic ear problems, and persistent sinus infections. Sleep-related breathing problems are the most frequent trigger. A child with significantly enlarged adenoids may snore heavily, breathe through their mouth constantly, or develop obstructive sleep apnea, where breathing repeatedly stops and starts during sleep.
Ear disease is another common reason. Enlarged adenoids can block the tubes that drain fluid from the middle ear, leading to persistent fluid buildup (lasting three months or more), recurring ear infections (three or more in six months, or four or more in a year), or the need for repeated ear tube placements. Chronic sinus infections that don’t respond to antibiotics also frequently lead to adenoid removal.
Less common but recognized reasons include:
- Nasal-sounding speech caused by blocked airflow
- Dental or jaw development problems from chronic mouth breathing
- Heart and lung strain in severe cases where long-term airway obstruction puts pressure on the cardiovascular system
Surgery is generally considered after less invasive approaches have been tried. For sinus-related cases, at least two rounds of antibiotics are typically attempted first. For sleep-related breathing issues, symptoms need to have persisted for at least three months before surgery is recommended.
How the Surgery Works
Adenoidectomy is performed under general anesthesia, meaning your child will be completely asleep. The surgeon works through the mouth, so there are no external incisions or visible scars. Several techniques exist. The traditional method uses a curved instrument to scrape the adenoid tissue away, a technique that’s been used since the 19th century. More modern approaches use heat-based tools or a technology called coblation, which breaks down tissue at the molecular level and causes less bleeding.
Newer endoscopic methods give the surgeon a direct view of the adenoids during removal, which helps ensure all the tissue is taken out and reduces the chance of accidentally injuring nearby structures. Traditional curettage is essentially a “blind” procedure, which can sometimes leave residual tissue behind and lead to regrowth. The entire surgery typically takes 20 to 30 minutes.
What Recovery Looks Like
Most children experience a sore throat for one to two weeks after surgery, with the worst discomfort concentrated in the first three to four days. Pain is managed with over-the-counter medications. The standard approach is alternating doses of acetaminophen and ibuprofen every three hours, so each medication is given every six hours on a staggered schedule. This rotation should continue around the clock, including overnight, for the first five days. After that, you can switch to giving medication only as needed. Codeine is no longer prescribed for this surgery due to safety concerns, and children under four generally don’t need prescription pain medication at all.
Hydration is the single most important part of recovery. A moist throat heals better, and staying hydrated lowers the risk of bleeding and prevents hospital readmission for dehydration. Encourage frequent small sips of water, electrolyte drinks, or popsicles throughout the day. Waking your child once during the night to drink fluids and take pain medication can help during the first few nights.
There are no strict dietary restrictions after surgery. If it doesn’t hurt to eat, it’s fine to eat. That said, most children gravitate toward softer foods in the first several days: applesauce, yogurt, mashed potatoes, plain pasta, smoothies, broths, and pudding. Cold foods can feel soothing. As your child feels better, regular foods can be reintroduced gradually. Protein-rich options like Greek yogurt and nutritional shakes help maintain strength during recovery.
Snoring may actually sound the same or even worse immediately after surgery due to throat swelling. This resolves over the following two weeks. Most children return to school within one to two weeks, though physical activity like running, swimming, and sports should wait until the throat is fully healed, typically around two weeks.
Risks and Complications
Adenoidectomy is a very safe procedure. A large population-based study of over 51,000 adenoidectomies found that serious complications are rare. Only 0.1% of surgeries resulted in post-operative bleeding requiring a medical visit, and another 0.1% led to readmission for bleeding. The chance of needing to return to the operating room for bleeding was just 0.01%, or roughly 1 in 10,000 surgeries. Post-operative infection was the most commonly reported complication, but even so, only 2.6% of patients needed an outpatient follow-up visit and just 0.2% required readmission.
How Effective the Surgery Is
For children with obstructive sleep apnea, adenoidectomy resolves the condition in roughly 82% of cases. That success rate holds even for non-obese children and those with more severe apnea, where about 80% see resolution. Children with both very large tonsils and severe apnea may benefit more from having both the adenoids and tonsils removed together, where the success rate climbs to about 90%.
Long-Term Effects on the Immune System
A common concern among parents is whether removing part of the immune system will leave their child more vulnerable to illness. Research consistently shows it does not. Antibody levels (particularly one type involved in fighting respiratory infections) can dip slightly in the first month after surgery, but they remain within the normal range and return to pre-surgery levels by three months. Studies tracking children after adenoidectomy have found no increase in respiratory infections, no signs of immune deficiency, and no long-term changes to immune function. The body’s other immune defenses compensate fully, even in children younger than three who have the surgery.