Maxillary sinus retention cysts (MRCs) are typically asymptomatic and require no treatment. An early 30s man presented with a decade-long history of severe left-sided chronic facial pain (CFP).

The anterior ethmoid-middle meatal complex (osteomeatal complex) is a key area in the pathogenesis of sinusitis. [1] The osteomeatal complex contains the narrow channels that provide for ...