上颌窦粘膜囊肿在人群中有较高的发生率。因其不破坏窦壁，大多数情况下不引起临床症状，也不影响人们的生活。对于地面人员来说，单纯上颌窦粘膜囊肿无需进行特殊处理［１］。但是，上颌窦粘膜囊肿是否会危及飞行安全，目前尚缺乏系统的临床观察。本文报告飞行人员上颌窦粘膜 Maxillary sinus mucosal cysts in the population have a higher incidence. Because it does not damage the sinus wall, in most cases does not cause clinical symptoms, does not affect people’s lives. For ground staff, simple maxillary sinus mucosal cyst without special treatment [1]. However, the maxillary sinus mucosal cyst will endanger the flight safety, the current lack of systematic clinical observation. This article reports pilots’ maxillary sinus mucosa