A Stafne bone cyst (Stafne defect, static bone defect) is not a true cyst. It represents a developmental defect in which the submandibular gland causes a depression on the lingual aspect of the mandible. This depression either contains a portion of submandibular salivary gland tissue or fibrous tissue and muscle. These lesions classically present as an asymptomatic radiolucency near the angle of the mandible and below the level of the mandibular canal. Literature states that 80% to 90% of Stafne lesions occur in male patients and, once recognized, require no treatment.