Enlarged Adenoids Removal – Indications, Risks & Outlook

4. Causes of the enlarged adenoids. Some throat infections, especially those that last for a long time or occur frequently can lead to the enlargement of the adenoids that block the airways. It may result in troubled breathing, and blocked Eustachian tubes. They connect nose with the middle ear, so blocked tubes can also result in respiratory problems, lead to ear infections,  and even loss of hearing.