Is a breast cancer shoulder lump metastatic?
On One Hand: Lumps Can Be a Warning Sign of CancerAccording to the American Cancer Society, a lump can be a warning sign of cancer. In people who have been diagnosed with breast cancer, a lump in the shoulder may be a sign that the cancer has metastasized, or spread beyond the breast tissue.On the Other: Many Lumps Are BenignNot all lumps indicate cancer–in fact, the majority do not. A lump in the shoulder could be caused by many conditions, including arthritis, a strained muscle, a cyst, a benign tumor or an infection of the bone.Bottom LineA lump on the shoulder does not necessarily mean that breast cancer has metastasized.
