Ruptured milk ducts may cause mastitis, milk stasis, pleural effusion and other consequences, you can go to the hospital in time for further examination to clarify the cause of the disease, and then timely consultation. 1. Mastitis: usually due to the rupture of the milk ducts, resulting in internal damage to the mammary gland, so that bacteria invasion, and thus the phenomenon of mastitis, and will appear in the breast pain and swelling, pus broken and other symptoms. 2. Breast milk stagnation: it is usually due to the rupture of the milk ducts, which will lead to lumps and infections in the breasts, resulting in blockage of the mammary glands, thus causing the phenomenon of breast milk stagnation, which usually results in swelling, pain, lumps and other symptoms. 3. Pleural effusion: it may be due to the rupture of milk ducts, resulting in seborrheic lymphatic fluid seepage into the chest cavity, which in turn causes pleural effusion, pleural effusion usually occurs shortness of breath, chest tightness and other symptoms. If the phenomenon of rupture of the milk ducts, you should go to the hospital in time to avoid delaying the condition and adverse consequences, and you should pay attention to rest in daily life, avoid exertion, and exercise appropriately.