ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Adenoid hypertrophy in a child. Coloured X-ray through the nasopharyngeal region of a 9-year-old child's head, showing enlarged (hyopertrophic) adenoids. Front of the head is at left. Adenoids (pharyngeal tonsil, or nasopharyngeal tonsil) are a mass of lymphoid tissue situated posterior to the nasal cavity, in the roof of the nasopharynx, where the nose blends into the throat.
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