Abstract: To the Editor:Dermatofibrosarcoma protuberans is a type of poor to moderately differentiated tumor that accounts for 0.1% of all malignant tumors.[1] This tumor type mainly occurs in the superficial skin and the subcutaneous tissue of the trunk and is rare in patients with breast cancer.[2] Here,we report a patient with dermatofibrosarcoma protuberans of the breast whose tumors are irregular in shape.