MARK THOMAS / SCIENCE PHOTO LIBRARY MARK THOMAS / SCIENCE PHOTO LIBRARY
Tonsillectomy. Surgeons performing a tonsillectomy (tonsil removal surgery). Tonsils are masses of lymphoid tissue that fight infections in the upper respiratory tract. Enlarged tonsils can be caused by repeated throat infections. If the swelling does not subside, then the tonsils can be removed.
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