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Bony window approach for a traumatic bone cyst on the mandibular condyle: a case report with long-term follow-up

Journal of the Korean Association of Oral and Maxillofacial Surgeons / Journal of the Korean Association of Oral and Maxillofacial Surgeons, (P)2234-7550; (E)2234-5930
2016, v.42 no.4, pp.209-214
Hyoung Keun Kim (Yonsei University)
Jae-Hyung Lim (Korea University Ansan Hospital)
(Yonsei University)
(Yonsei University)

Abstract

Traumatic bone cyst (TBC) occurs preferentially on the mandibular symphysis and body, but rarely on the mandibular condyle. When TBC occurs in the condylar area, it can usually be related with or misdiagnosed as a temporomandibular joint disorder. A 15-year-old female patient visited the Tem-poromandibular Joint Clinic with a 5-year history of pain and noise localized in the left temporomandibular joint. On imaging, a well demarked oval-shaped radiolucent lesion was observed on the left condyle head. The patient underwent cyst enucleation and repositioning of the bony window on the lateral cortex of the affected condyle head under the impression of subchondral cyst or TBC; however, no cystic membrane was found. The bone defect resolved and showed no recurrence on the serial radiographic postoperative follow-up for 43 months after surgery.

keywords
Traumatic bone cyst, Simple bone cyst, Aneurysmal bone cyst, Mandibular condyle, Temporomandibular joint

Journal of the Korean Association of Oral and Maxillofacial Surgeons