While breast lumps are common, most of them are benign and go away without any complications with or without a breast lump treatment. Records show that only 3 to 6% of breast lumps are formed due to cancer and have the ability to spread to other parts of the body. Although the ratio is low, breast lumps should be brought to medical attention nonetheless. These need the same medical attention as breast lumps. Self-examination cannot determine whether a lump is cancerous or not. Hence, you would need an oncologist to perform the diagnosis to identify its nature.