Stage 4 Kidney Cancer With Metastasis. The urine may appear red pink or brown. Stage 4 cancer of any kind is hard to treat.
Metastasis develops when cancer cells are moving away from the main tumor and enter the blood or lymphatic system. Metastasis is a medical term for cancer that has spread to other parts of the body. Another symptom of stage 4 kidney cancer may be regular pain in the lower back below the ribs.
And within a stage an earlier letter or number means a lower stage.
Stages 1 and 2 describe cancers in which the tumor is still in the kidney. The stage is based on the size of the tumor and the spread of the cancer. In fact stage 4 of kidney cancer is further sub divided into stage 4a and stage 4b. In stage 4a the cancer has developed in the tissues surrounding the kidneys but not in the nearby organs whereas in stage 4b other parts of the body are also affected by the cancer.