Abstract

Mucoceles of the paranasal sinuses are defined as cystic expansile lesions (Lageback in 1820). Rollet in 1909 coined the term mucocele. Mucocelesare most commonly found in the frontal sinus (60–65%) butcan also occur in ethmoidsinuses (around 25%), sphenoid sinus (1–2%) and maxillary sinus (10%). The etiopathogenesis of PNS mucocele is multifactorial with most common causes being allergy, inflammation and trauma or less commonly it can be secondary to neoplastic lesions in PNS which are obstructing the sinus ostia.

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