Primary Intraosseous Squamous Cell Carcinoma of the Mandible Mimicking Inflammation on FDG PET/CT.

Fan, Qiuping; Wang, Rang; Tian, Rong; Su, Minggang · Clin Nucl Med · 2022

case_report · Level V

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Abstract

Primary intraosseous squamous cell carcinoma (SCC) is an uncommon malignant cancer involving the jaw bones. We herein reported the imaging findings of a primary intraosseous SCC of the mandible in a 47-year-old man. He was diagnosed as cancer of unknown primary in the cervical node. FDG PET/CT revealed a focal hypermetabolic lesion around the tooth root of the right lower molar. MRI showed the lesion had hyperintensity on T2-weighted imaging and significant enhancement on T1-weighted imaging fat saturate images. The final diagnosis of primary intraosseous SCC of mandible was confirmed pathologically.

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