Primary tumor T stage, upper outer quadrant tumor,>15 axillary lymph nodes removed and the breast hematoma/seroma after surgery,were significantly associated with DBC.

• 肿瘤T分期、原发肿瘤部位、腋窝淋巴结清扫数目>15个、术后乳腺血肿/血清肿形成与DBC的发生有相关性。