上颌窦粘液囊肿是由窦粘膜发生的囊肿,很少见。1974年后见于法文和英文文献中者仅16例。作者报告5例并结合文献讨论本病的诊断和治疗问题。5例患者为3女2男,年龄28～60岁,其中4例因颧部肿胀疼痛、1例因鼻前庭部肿胀而就诊。X线检查除窦腔密度增高外,1例窦腔膨大,2例窦壁骨质破坏,另2例窦壁无异常改变。经上颌窦穿刺,肿胀和疼痛症状都可暂时缓解。手术发现囊肿完全充满窦腔。组织学检查均见囊壁有呼吸道上皮,可诊断粘液囊肿。患者既往都有鼻窦外伤史或手术史。本文报道者系充满窦腔的囊肿。充满窦腔的粘液囊肿与未充满窦腔之囊肿易于区别,后者一般在窦底部,属无症状型,X线检查易发现,有 Maxillary sinus mucosal cysts are cysts that occur from the sinus mucosa and are rare. Only 16 cases were found in French and English literature after 1974. The authors report 5 cases and discuss the literature on the diagnosis and treatment of the disease. Five patients were 3 males and 2 males, aged 28 to 60 years. Four of them were swollen and painful in the zygomatic region, and one was treated by swollen nasal vestibule. In addition to X-ray examination in addition to increased density of the sinus, sinus infiltration in 1 case, 2 cases of sinus wall bone destruction, and the other 2 cases of sinus wall without abnormal changes. The maxillary sinus puncture, swelling and pain symptoms can be temporarily relieved. Surgical discovery of cysts completely filled with sinus. Histological examination are seen in the wall of the respiratory epithelium, mucus cyst can be diagnosed. Patients had a history of sinus trauma or surgery in the past. This article reports a sinus-filled cyst. Sinus filled sinus cysts and sinus cysts are easy to distinguish, the latter usually in the bottom of the sinus, is an asymptomatic type, X-ray examination is easy to find, there