Lucent lesions of the mandible are not uncommon and may be the result of odontogenic or non-odontogenic processes. Lucency may be conferred by a cystic process (e.g. periapical cyst) or a lytic process (e.g. mandibular metastases).
Pathology
Etiology
Odontogenic
periapical (radicular) cyst (60% of odontogenic cystic lesions 4)
Non-odontogenic
traumatic bone cyst of jaw (simple cyst)