Tumor

Tumor: A tumor is an abnormal growth of body tissue. Tumors can be cancerous (malignant) or noncancerous (benign).
In general, tumors occur when cells divide and grow excessively in the body. Normally, cell growth and division is very controlled. New cells are created to replace older ones or to perform new functions. Cells that are damaged or not needed anymore die to make room for healthy replacements. If the balance of cell growth and death is disturbed, a tumor may form.

Problems with the body's immune system can lead to tumors. Tobacco causes more deaths from cancer than any other environmental substance. Other causes include: Drinking too much alcohol, Excessive sunlight exposure, Genetic problems, Obesity, Radiation,Viruses

Types of tumors known to be caused by viruses are:
-Cervical cancer (human papillomavirus)
-Hepatocellular carcinoma (hepatitis B virus)


Treatment differs based on:
-The type of tumor
-Whether it is noncancerous or cancerous

Its location
-If the tumor is benign and is located in a "safe" area where it will not cause symptoms or affect the function of the organ, sometimes no treatment is needed.