Sphenoethmoid mucoceles are rare, benign, and expansile cyst-like lesions of the paranasal sinuses.They form secondary to chronic inflammation or sinus ostia obstruction.

• 摘要蝶筛窦黏液囊肿为一罕见、良性、生长缓慢、具侵犯性的疾病，造成的原因可能与鼻窦窦口的阻塞或黏膜慢性发炎有关。