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.
In many cases, people may have no early symptoms of kidney cancer. As the tumor grows larger, symptoms may appear. You may have one or more of these kidney cancer symptoms 1  : Blood in your urine. 2  A lump in your side or abdomen. 3  A loss of appetite. 4  A pain in your side that doesn't go away.5  Weight loss that occurs for no known reason. 6  Fever that lasts for weeks and isn't caused by a cold or other infection.7  Extreme fatigue. 8  Anemia.ou may have one or more of these kidney cancer symptoms 1  : Blood in your urine. 2  A lump in your side or abdomen. 3  A loss of appetite. 4  A pain in your side that doesn't go away.