What Are The Most Common Symptoms?
The symptoms of metastatic breast cancer can vary depending on the degree of how badly the cancer has spread throughout the body and where the cancer has spread.
Metastasis in the Bone
Breast cancer is able to travel into the bones through the bloodstream. If the cancer has spread to the bone, it will cause severe pain, like back or hip pain. It may also result in too much calcium in the blood, swelling and fragile bones that are easily fractured or broken, as well as a leg or arm that feels weak or numb.
BreastCancer.org notes that while breast cancer can spread to any bone, it is most often found in the ribs, spine, pelvis, or the long bones in the arms and legs. It also has the ability to travel into the spongy tissue inside the bones called the bone marrow. This is where the blood cells are made.