Sphenoid Sinus: Mucous Retention Cyst vs. Mucocele
Channel: James Smirniotopoulos
Date: 2013-10-30

A mucocele results from obstruction of the drainage of a paransal sinus - resulting in expansile remodeling of the bone walls, surrounding a fluid filled space. These are most common in the frontal sinus.  Obstruction of a single mucus gland creates a retention cyst, usually small  and often asymptomatic - these are most common in the maxillary antrum.  Earn CME - http://rad.usuhs.edu/medpix/cow_image.html?mode=case_viewer&imid=59331&pt_id=14328&quiz=yes#pic