Primary Squamous Cell Carcinoma of the Breast With 18F-FDG PET/CT

A 67-year-old woman presented with a palpable breast mass. A biopsy was taken, and the diagnosis was squamous cell carcinoma. Primary squamous cell carcinoma of breast is an extremely rare subtype of invasive breast cancer. The diagnosis requires ruling out metastasis of other sites and that is not skin origin. The patient was referred to 18 F-FDG PET/CT for diagnosis and staging. In this report, we present PET/CT and postsurgical pathology findings.