Malignant transformation of craniofacial fibrous dysplasia: a systematic review of overall survival.

The incidence of malignant transformation of fibrous dysplasia (FD) is very rare. Thus, the available knowledge of its characteristics, management, and survival is scarce. Here, we present a systemic review of fibrous dysplasia that had undergone malignant transformation. A comprehensive search was performed on PubMed electronic database. The survival rates and hazard ratios of age, gender, past history of previous radiotherapy, type of FD, and treatment were collected from the published articles and analyzed. Forty-eight cases were eligible for inclusion in the study. Patient's age, gender, past history radiotherapy, and type of FD did not influence the overall survival (OS). The Kaplan Meier analysis showed that the patients who had not received any treatment had poor prognosis with a median survival of 4 months. The patients that received surgery had significantly longer OS than that in the biopsy group. The prognosis of malignant transformation of FD is relatively poor, and surgery is the optimal treatment of choice. Nevertheless, the efficacy of postoperative adjuvant therapy to patient OS is still undefined.