Primary Osteosarcoma of the First Metatarsal With Multiple Metastases on 18F-FDG PET/CT.
Guoxing Zhao, Peng Xie, Xin Liu et al.
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Case in brief
A patient presented with primary osteosarcoma located in the first metatarsal, an uncommon site for this type of tumor. Imaging with 18F-FDG PET/CT revealed multiple metastases, which were later confirmed through histopathological examination. The case highlights the diagnostic utility of PET/CT in identifying metastatic disease in atypical presentations of osteosarcoma.
What made this case unusual
The occurrence of primary osteosarcoma in the first metatarsal is rare, making this case noteworthy for its atypical location.
Diagnostic / clinical pearl
Clinicians should consider the possibility of osteosarcoma in unusual locations, such as the metatarsals, especially when evaluating bone lesions.
Why it matters
This case underscores the importance of advanced imaging techniques like 18F-FDG PET/CT in detecting metastases in atypical presentations of bone tumors.