Adenoid hypertrophy does not always require surgery, but depends on the degree of adenoid hypertrophy and specific analysis of the problem. If the adenoids in the nasopharynx are congested, swollen and mildly enlarged due to an acute infection of the upper respiratory tract, the condition of the adenoids will generally improve on its own after the upper respiratory tract infection is actively treated, and surgery is not necessary. However, if a patient with adenoid hypertrophy has symptoms such as open-mouth breathing during sleep at night, apnea, suffocating awakening, and inability to lie down, surgical treatment is required. If treatment is delayed, facial growth and development may be affected, resulting in adenoidal facies, such as widened interbrow spacing, widened nasal bridge, enlarged nostrils, high arched palatal arch, receding lower jaw, and overdeveloped maxilla, causing facial deformities. Adenoid hypertrophy can block the posterior nostril and nasopharynx, causing poor nasal ventilation, which can lead to asphyxia in serious cases.