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: Flank pain - Pain on one side of the body between the upper abdomen and the back. Abdominal Mass - a mass in the area of the kidneys discovered during an examination. Anemia - a condition in which the number of red blood cells is below normal.
Kidney tumors may not hurt or show any signs. 1  Sometimes a growth in the kidney can cause: 2  Blood in the urine. 3  Pain in the side, abdomen or back that doesnât go away. 4  A lump in your abdomen. 5  Loss of appetite and weight loss for no known reason. 6  Anemia and fatigue.