扁桃体是防止微生物通过咽部进入血液的一个过滤器,是一道重要的屏障。在儿童时由于生理上特点,其扁桃体常见有增殖性肿大,即随年龄增长而逐渐增大,至10岁左右70～80%的儿童均可有不同程度的扁桃体的增殖性肿大,10岁以后肿大的百分比则逐渐下降,肿大可有不同程度回缩,故有一定规律性。Ⅰ度及Ⅱ度肿大多属于生理性肥 Tonsils are a filter that prevents microorganisms from entering the bloodstream through the throat and is an important barrier. In children due to the physiological characteristics of the tonsil common proliferative swelling, that is, with age and gradually increased to 70 years of age about 70 to 80% of children may have varying degrees of tonsil proliferation, 10 After the age of the swelling percentage is gradually decreased, enlargement may have varying degrees of retraction, so there is a certain regularity. Ⅰ degree and Ⅱ degree swollen mostly belong to physiological fat