Metastasis occurs when cancer cells break away from the original tumor in the breast and spread to other parts of the body. These cancer cells travel through the bloodstream or the lymphatic system (the network of lymph nodes and vessels that removes bacteria, viruses, and cell waste). Metastatic breast cancer or stage 4 breast cancer can spread to any part of the body. Symptoms depend on how far the cancer has spread. 

Bones: Pain and Fractures

Brain: headache, seizures, or dizziness

Lungs: shortness of breath, wheezing, persistent cough, or coughing up mucus or blood

Liver: jaundice or abdominal swelling

Other symptoms include

a new lump in the breast

pain in the abdomen or middle part

Loss of appetite, nausea and vomiting

Sudden weight loss

Persistent hiccups

being very tired

breast numbness or weakness

If you have been diagnosed with breast cancer and are experiencing symptoms of metastasis, you should consult a specialist. A doctor can diagnose metastatic breast cancer through various tests, including blood tests, scans, and biopsies. Checking your breasts regularly can help you identify any changes that may indicate breast cancer.

Symptoms of breast cancer

A lump or swelling in the breast

difference in breast size

Discharge from the nipple

changes in the skin of the breast

Nipple changes

Excessive fatigue and weight loss