Tumor ni mass of tissue,which may be solid or fluid filled.Tumor inaweza kuwa na cancer au bila cancer.Tumor zinatokea cells za mwili zikiwa zinakuwa na kujigawanya bila mpangilio.Kama kuna unbalance kwenye cell growth au matatizo kwenye immune system.
Vitu vinavyoweza kusababisha tumor ni:
- Benzene and other chemicals and toxins
- Drinking too much alcohol
- Environmental toxins, such as certain poisonous mushrooms and a type of poison that can grow on peanut plants (aflatoxins)
- Excessive sunlight exposure
- Genetic problems
- Obesity
- Radiation exposure
- Viruses
Types of tumors known to be caused by viruses are:
- (human papillomavirus)
- (hepatitis B and hepatitis C viruses)