Cancer is the uncontrolled growth of abnormal cells in the body. Cancer develops when the body's normal control mechanism stops working. Old cells do not die and instead grow out of control, forming new, abnormal cells. These extra cells may form a mass of tissue, called a tumor, however cancer of blood cells such as leukemia, does not form solid masses.
Cancer is not contagious, but it can spread from one part of the body to other parts from the tumors, called malignant tumor. Other type of tumor does not spread, invading the nearby tissues.
Symptoms depend on the type of cancer. Initially there are no symptoms but sometimes there is a lump or swollen lymph nodes. Later stages symptoms may include:
• Pain in specific area
• Weight loss
• Loss of appetite
• Visible abnormal growth in specific area.
Biopsy of the affected area by taking a small section of tissue and testing it for the abnormal cells.
• Surgically removing the abnormal growth.