3.1 AR patients adenoids were mainly of edematous type.
In outpatient clinic, we observed 150 AH patients, 44 (29.33%) AH patients without AR and 106 (70.67%) with AR (Table 1). Base on the appearance of adenoids, we divided the adenoids into three types: Edematous type (Fig. 1A), common type (Fig. 1B), and fibrous type (Fig. 1C). The pathological sections showed that edematous adenoid tissue with loose structure and edema was accompanied by dilation and hyperemia of small blood vessels (Fig. 1A’); The common type was consistent with the lymphoid tissue (Fig. 1B’); The fibrous adenoid tissue exhibited dense fibrous connective tissue hyperplasia (Fig. 1C’). Among the 44 cases of AH without AR, 42 (95.45%) of adenoids were found to be the common type (Fig. 1D). Among the 106 cases of AH with AR, 72 (67.92%) of adenoids were found to be of the edematous type (Fig. 1E).