ABSTRACT
Traumatic (simple) bone cyst (TBC) is an empty nonepithelial-lined cavity of the jaws. The majority of TBCs are located in the body or symphysis of the mandible. Clinically, the lesion is asymptomatic and often discovered incidentally on routine radiographic examination as a noncorticated sharply defined radiolucent area with undulating borders. Because tissues for histologic examination may be scant or nonexistent, the definite diagnosis is invariably achieved during surgery when the lesion is empty. In this report, we present a case of unusual bilateral synchronous TBCs of the mandible with possible traumatic etiology, featuring significant buccolingual expansion of the mandibular ramus and body, presence of septa, and probable displacement of the inferior alveolar canal.
Subject(s)
Jaw Cysts/diagnostic imaging , Mandibular Diseases/diagnostic imaging , Adolescent , Female , Humans , RadiographyABSTRACT
A 33-year-old patient with a huge aneurysmal bone cyst (ABC) was imaged using cone-beam CT, MRI, and angiography. ABC is an uncommon non-neoplastic, expansile lesion of bone. Although common in the appendicular skeleton and spine, only 2% of the lesions occur in the craniofacial skeleton. The plain radiographic features of gnathic ABC may show an omni-expansile unilocular or multilocular radiolucency. Fluid-fluid levels have been reported in cystic compartments of ABCs; however, this feature is not diagnostically specific for ABC. In this article, we present a case of a rapidly growing, extraordinarily large ABC of the posterior mandible, with emphasis on comparative imaging features of this lesion in cone-beam CT, MRI, and carotid angiography.
