More. 1  Oxygen Levels and Brain Function The brain consumes about 25 percent of a personâs oxygen intake, so proper brain function requires enough blood oxygen. 2  How Oxygen Affects the Heart The heart is a key player in making sure oxygenated blood travels to the organs and tissues that need it.
Other possible kidney cancer symptoms may include: 1  Flank pain - Pain on one side of the body between the upper abdomen and the back. 2  Abdominal Mass - a mass in the area of the kidneys discovered during an examination. 3  Anemia - a condition in which the number of red blood cells is below normal.  Fever - not due to cold or flu.
As kidney cancer grows, it may invade organs near the kidney, such as the liver, colon, or pancreas. Kidney cancer cells may also break away from the original tumor and spread (metastasize) to other parts of the body. When kidney cancer spreads, cancer cells may appear in the lymph nodes.