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Intramuscular metastasis of uterine cervix cancer on F-18 FDG PET/CT.

We report F-18 FDG PET/CT images of biopsy-proven intramuscular metastasis from primary uterine cervix cancer. A 70-year-old woman was admitted because of a mass in the left axilla. She was diagnosed with uterine cervix cancer and underwent total abdominal hysterectomy, bilateral salpingo-oophorectomy, and pelvic node dissection and received adjuvant chemotherapy and radiation therapy 9 years ago. Magnetic resonance imaging showed a large soft tissue mass in the intramuscular region of the left axilla. The mass showed intense F-18 FDG uptake with a central necrotic portion on F-18 FDG PET/CT. Hypermetabolic lymph nodes were also noted in the left axilla, interpectoral, and left supraclavicular areas. Additionally, several hypermetabolic nodules were noted in both lungs. The lesion in the left axilla was excised and the pathologic results were consistent with metastasis from uterine cervix cancer.