Patient's question:
A 4-year-old child has adenoid hypertrophy, with a 3mm thickening in the nasopharyngeal region. How is the child's adenoid hypertrophy caused?Doctor's answer:
1. Acute upper respiratory tract infection2. Chronic sinusitis
3. Allergic rhinitis
Adenoid hypertrophy in children is often triggered by acute upper respiratory tract infections, leading to hyperplasia and thickening of lymphoid tissue in the nasopharynx. When the hypertrophied lymphoid tissue in the nasopharynx obstructs the posterior nasal, it causes stagnation of the mucociliary escalator in the nasal cavity and sinuses, further triggering chronic rhinitis and sinusitis. The purulent secretions of chronic rhinitis and sinusitis accumulate in the nasopharynx, where the inflammatory mediators and inflammatory cells further stimulate the hyperplasia and thickening of lymphoid tissue in the nasopharynx.
Thus, adenoid hypertrophy and chronic rhinitis and sinusitis form a vicious cycle of mutual causation. This is the most common factor for adenoid hypertrophy in children. As for allergic rhinitis, its incidence rate in children is not high, so it can only be ranked second.