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Overview
The adenoids (lymphatic tissue in the back of the throat), along with the tonsils, comprise the Waldeyer ring.
Review Date 11/29/2022
Updated by: Josef Shargorodsky, MD, MPH, Johns Hopkins University School of Medicine, Baltimore, MD. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.