An incidental finding of breast cancer after breast injury.

We report of a 52-year-old woman presenting with a breast palpable mass after a trauma due to accidental fall. The patient came to our attention to perform an ultrasonographic examination because of the persistence of the mass after the trauma. The exam showed an hypoanechoic oval formation with blurred margins and no vascularization at Power Doppler, located to the union of the upper quadrants of the right breast. The patient also performed mammographic examination, which showed an unknown oval radiopaque area. The findings were consistent with post-traumatic hematoma, even in relation to the anamnestic data, therefore we recommended anti-inflammatory therapy and a new check in fifteen days. The next ultrasonographic examination showed the persistence of the mass, slightly reduced in size, so we tried to achieve a more detailed diagnosis by performing MRI; however, the diagnostic doubt still remained, so we decided to perform a US-guided core-biopsy: the histological diagnosis was infiltrating ductal carcinoma of the breast. A review of the literature confirmed that breast lesions often are incidental findings after a breast trauma.