Mucocele of the ethmoid sinus revealed by an epiphora

To report a case of anterior ethmoid mucocele with atypical location and ophthalmic symptomatology. A 18-year-old patient presented with epiphora and swelling of the left medial canthus; craniofacial scan revealed an ethmoid mucocele. We describe a surgical technique for the treatment of mucoceles, illustrated with CT and endoscopy images. Mucoceles present with various clinical and radiological manifestations, and in particular may have an ophthalmologic impact. Treatment is surgical, with various techniques available. Epiphora may be an unusual presentation of an ethmoid mucocele, due to lacrimal duct compression.