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. 2010 Mar;109(3):e88-94.
doi: 10.1016/j.tripleo.2009.10.049.

Computed tomography findings in radiation-induced osteosarcoma of the jaws

Ziyang Shao  1 , Yu He, Lizhen Wang, Haisheng Hu, Huimin Shi
Affiliations

Computed tomography findings in radiation-induced osteosarcoma of the jaws

Ziyang Shao et al. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Mar.

Abstract

Objective: The objective of this study was to report the CT appearances of radiation-induced jaw osteosarcomas (RIJOS) following therapeutic irradiation.

Study design: The CT studies of 7 subjects with RIJOS were reviewed retrospectively.

Results: RIJOS developed at 3 to 14 years following radiotherapy. Four patients had tumors in the maxilla and 3 in the mandible. Five tumors were osteoblastic, with 1 osteolytic and 1 mixed lesions. Osteoid tumor matrix mineralization was identified in 6 subjects. Periosteal reaction was demonstrated in 6 cases. All subjects showed a soft tissue extension component beyond the area of bone destruction.

Conclusion: CT is a useful tool to identify RIJOS and plays an important role in preoperative assessment of the extent of the tumor.

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