OBJECTIVE: To describe a patient with uncommon presentation of mucoceles and literature review. CASE REPORT: JR 21 years old, male, single, with nasal obstruction on the right side and right unilateral fetid mucopurulent rhinorrhea. Reported nasal obstruction on the right side 3 months of development, with clear unilateral rhinorrhea, becoming fetid and purulent, anosmia is added to the table and face feeling heavy / slow. He denies fever, headache or other symptoms. It was presumed diagnosis of chronic sinusitis with probable mucoceles. Examination within normal parameters, computerized tomography with contrast is observed septum with a slight deviation to the left by mass of cystic aspect occupying the right nasal tank; it appears from the right maxillary sinus hypodense, heterogeneous. Nasal endoscopy is observed within cystic aspect mucous mass occupying the right nasal cavity with pus. It was decided to perform endoscopic surgery without complications. The patient COMING soon controls an improvement of symptoms without recurrence. CONCLUSION: mucopyoceles maxillary sinus, an uncommon variety of the same, but interesting to take into accounts the different diagnosis in diseases of the paranasal sinuses.