Hello, My answer is as follows: There are only few studies addressing adenoids regrowth after adenoidectomy. The available information suggests that regrowth rate varies between 9% to 26%, but the regrowth usually is classified as traces of adenoidal tissue or grade 1 - obstructing less than 33% of nasopharyngeal space . In this context, the conclusion is that adenoids rarely regrow and, when they do, usually their size is small or only traces, and asymptomatic. Please note that it is impossible to remove adenoids at 100% rate because this tissue is not encapsulated (contrary to tonsils); therefore, there is always the risk of adenoid regrowth. Literature suggests that adenoids regrowth after adenoidectomy is significantly higher among children aged 5 years or younger and those using antibiotics more often after surgery (implying frequent infections and inflammation, causing growth of adenoids). Also, the risk of adenoid regrowth is increased in children experiencing frequent infections of middle ear, gastric reflux. Also, the risk increases considerably if adenoidectomy is performed by an inexperienced surgeon (or surgeons that had just started to operate) compared to experienced surgeons. In the case of your child it is obvious that there is need of another evaluation and probably for a second surgery to remove the adenoid tissue again. You have not provided us with information about past ear infections and use of antibiotics for your child, but since your child is young and the procedure was performed rather quickly 10-15 minutes then I judge that there is a high risk that adenoids have grown back and need to be re-treated. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ervin Toçi