A six-year-old girl was referred by her dentist because of a tender swelling of the mandible on both sides. On intra-oral examination a firm swelling on the buccal side of both first permanent lower molars was noticed. Bucally of the teeth 36 and 46 a pocket depth of more than 10 mm was measured. On conventional X-rays no abnormalities were found. Additional CT-scan examination showed a well-described radiolucent lesion bucally of the teeth 36 and 46 compatible with the diagnosis of a bilateral juvenile paradental cyst. The lesions were enucleated without removal of the associated teeth. The terminology of paradental cysts, as well as epidemiological, clinical, radiological, histopathological, and treatment aspects are further described.