Middle Turbinate Pyocele, an Uncommon Differential for Nasal Mass: A Case report.

Mucoceles are respiratory epithelium-lined cystic lesions found in the paranasal sinuses. Pyocele occurs when a mucocele becomes infected. Mucoceles develop as a result of obstruction of the normal sinus drainage tract with superadded infection. Inflammatory mediators are secreted, which lead to bone resorption and expansion of the mucocele. Concha bullosa is one of the most common anatomical variations in the nasal cavity. It refers to an air-filled cavity within the middle turbinate. Obstruction of the concha bullosa can rarely lead to the formation of a mucocele which may be secondarily infected forming a mucopyocele. The mucocele of the middle turbinate may present as an uncommon cause of nasal obstruction, headache, and other nasal or ocular symptoms, which, if correctly diagnosed, can be completely reversed by endoscopic surgery.