Cancer is characterized by uncontrolled growth of cells at any place in the human body. More than 200 types of cancer exist. Some of the causative factors of cancer include exposure the toxic chemical compounds, exposure to ionizing radiation, certain pathogens and genetics. Specific signs and symptoms of cancer occur depending on the type and grade of cancer. However, some of the general signs and symptoms of cancer are: generalized fatigue and tired, raised body temperature, unintentional weight loss, pain, changes in the bowel habits, bleeding, persistent cough, lumps, and changes in voice. The definite diagnosis of cancer along with its stage and grade is made by examining a biopsy sample of the cancer tissue. The staging and grading of the cancer helps determine the treatment methods and also the aggressiveness and spread of the disease. Though treatment is decided according to the stage and grade of the cancer, still it may include surgery, radiation therapy and chemotherapy using drugs.