On a routine radiographic exam, a well-defined radiolucent lesion was seen in the body of the mandible of a 17-year-old boy. At the time of operation, it proved to be an empty cavity. This is a(an) _____.: (A) Osteoporotic bone marrow, (B) Aneurysmal bone cyst, (C) Odontogenic keratocyst, (D) Traumatic bone cyst
Answer is D. Traumatic bone cysts characteristically occur in the body of the mandible of teenagers. They are pseudocysts in that they have no epithelial lining. They are empty cavities.