Cancer
What is cancer: Cancer, by definition, is the uncontrolled growth of cells. Any type of cells in the body can become cancerous. Once these cells grow out of control, they take over areas previously occupied by normal cells; sometimes these tumor cells break off and travel to other areas of the body. Wherever these cells lodge they can start new tumors. This process continues until there is not enough normal tissue remaining to sustain normal bodily functions. There are a number of factors that influence how fast a cancer may grow or spread: type of cancer cell, location, genetics, as well as any concurrent illness or debilitating condition the patient may have.