After thorax masculinisation, which is performed on trans people, the risk of breast cancer is practically null, as the procedure involves the removal of the entire breast gland. However, very specific cases of breast cancer have been described in mastectomised patients (subcutaneous mastectomy), as only a very small percentage of breast gland remnants remain after the operation. Therefore, self-examination and consultation with your surgeon is advisable in the event of any tumour in the breast or axillary area.