Simultaneous presentation of breast cancer and malignant phyllodes tumour is rare.
A female patient presented with a nodule in her left breast (infiltrating ductal carcinoma). On magnetic nuclear resonance another suspicious lesion (malignant phyllodes) was found in the right breast. Bilateral mastectomy was performed. Thirty two months later the patient is still free of disease.
The approach to dealing with synchronous breast tumours should be the same as that normally used.