title: Subarticular, cystlike lesion associated with avascular necrosis of the mandibular condyle: a case report.
abstract: Little is known about avascular necrosis of the mandibular condyle, which is necrosis of the epiphyseal or subarticular bone secondary to a diminished or disrupted blood supply in the absence of infection. We present a case of a large subarticular cystlike lesion that was found using cone-beam computed tomography (CBCT). There was an absence of osteoarthrosis, and the condylar articular surface was relatively intact. The patient's history, physical examination, and magnetic resonance images supported the diagnosis of avascular necrosis of the mandibular condyle. After 4 months of conservative therapy, new bone was observed in the cystlike marrow lesion, and a smooth articular surface was reestablished. Subarticular cystlike lesions without the collapse of the articular surface of mandibular condyles may be an early indicator of avascular necrosis.
authors: Center for TMD and Orofacial Pain, Peking University, School and Hospital of Stomatology, Beijing, Peoples Republic of China.
authors: Jie
authors: J
authors: Lei
authors: Mu-Qing
authors: MQ
authors: Liu
authors: Adrian U Jin
authors: AU
authors: Yap
authors: Kai-Yuan
authors: KY
authors: Fu
mesh_terms: D000328:Adult; D001845:Bone Cysts / Q000175:diagnosis; D054893:Cone-Beam Computed Tomography / Q000379:methods; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000379:methods; D008335:Mandibular Condyle / Q000473:pathology*; D008336:Mandibular Diseases / Q000175:diagnosis*; D010012:Osteogenesis / Q000502:physiology; D010020:Osteonecrosis / Q000175:diagnosis*; D019224:Temporomandibular Joint Disc / Q000473:pathology; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis