Imaging features of primary breast sarcoma: A case report.

Primary breast sarcoma (PBS) is a rare group of non-epithelial tumours arising from connective tissue of the breast. We report the case of a 55-year-old female who presented with rapidly increasing mass in the left breast. The mammogram showed a large high density mass occupying the whole of the left breast, while Doppler ultrasound showed a mass of increased vascularity. Diagnosis was confirmed by histopathology of ultrasound-guided biopsy. Although there are no pathognomonic imaging features of PBS, presence of a solitary large mass showing rapid growth, with circumscribed or indistinct margins without axillary lymph node involvement should raise the suspicion of sarcoma and prompt biopsy to ensure early diagnosis and treatment; particularly considering the aggressive nature of these sarcomas.