Because individuals differ in their response to surgery, their anaesthetic reactions, and their healing outcomes, ultimately there can be no guarantee made as to the results or potential complications. Anaesthetic risk is usually related to the health of the child, serious anaesthetic complications are very unusual and usually appear when a child in bad conditions (fever, anaemia, dehydration, bad nourishment, etc.) receives anaesthesia.
Adenoidectomy complications are rare, and usually minor? bleeding and infection are the most common. The child is always observed in hospital for a few hours after the operation. If bleeding does occur, the surgeon may insert a pack of gauze into the nose to stop the flow of blood. The pack is removed after a day or two. The adenoids bed usually becomes superficially infected, and can cause bad breath for approximately a week, but serious infections are very rare. Infection is treated with antibiotics and rest. Adenoidectomy typically is much less painful than tonsillectomy. Most children need no pain medications, a few doses of acetaminophen or ibuprofen will do.

There is no need to limit activity (playing or swimming) after the first ten days, or to have a special diet.
Surgeons usually see patients 2 to 4 weeks post-operati vely to ensure normal function and healing.
There is no evidence that removing children's adenoids causes any problem in the child immune system. This is because they are necessary in babies, but have no function in older children.
It is possible for adenoids to grow back, although that is reasonably rare. Regrowth seems to be more common when the adenoids are taken out in a child less than 18 months of age.