Maxillary retention cysts are benign cystic lesions of the maxillary sinus which occur as a result of obstruction of the seromucinous glands. They are usually an incidental finding on radiographs with very few clinical presentations. Cystic lesions in the nasal cavity or in the paranasal cavities are frequently encountered by the Otolaryngologist. Of the Paranasal sinuses, the Maxillary sinuses are the most commonly found to harbor the retention cysts. Retention cysts are mostly asymptomatic with non–erosive properties, and usually an incidental finding in the paranasal sinuses. They are described as rounded, Dome shaped soft tissue masses on radiological examination.