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Metastatic breast cancer is an advanced cancer that has spread to other organs in the body, if initial cancer treatments failed it can result into stage 4 cancer which can spread to brain, bones, lungs and liver.
Symptoms of the spread to bones are: pain, fractures, swelling and spinal cord compression.
Symptoms of the spread to liver are: loss of appetite, vomiting, nausea, bleeding, skin rash and pain.
Symptoms of the spread to brain are: headache, seizure, blurred vision, irrational behavior and nausea.
If it spreads to lungs it can cause chest pain, coughing of blood and shortness of breath.
Treatment
Systemic therapy or medication like chemotherapy and hormone therapy are required for treating metastatic cancer.