Post-traumatic hyperplasia of the mandibular condyle is a relatively rare condition associated with facial asymmetry accompanied by mandibular deviation and malocclusion. We report a case of right condylar hyperplasia that occurred after a traffic-related injury. The patient was a 32-year-old man who presented with asymmetry of the lower part of the face and malocclusion with mandibular deviation to the left. Radiographic examination revealed marked enlargement of the right mandibular condyle. Resection of the lesion was performed, and the remaining portion of the condyle was trimmed and contoured. Postoperative CT scans revealed new bone formation anterior to the condyle. Although there is a risk of recurrence, facial symmetry and good occlusion have been maintained for 4 years after operation.
