| There are several things that people need to | | | | Another thing that people need to know is that |
| know cancer. The first thing is that cancer is a | | | | prolonged exposure to UV radiation can lead to |
| class of diseases in which cells uncontrollably grow. | | | | melanoma as well as other skin malignancies. |
| The cells eventually invade and destroy adjacent | | | | People also need to know that the disease |
| tissues. These cells may sometimes spread to | | | | affects humans as well as animals and can be as |
| other parts of the body via the lymph or blood in | | | | a result of a viral or bacterial infection. Some of |
| a process called metastasis. The disease affects | | | | the viruses associated with human cancers include |
| people of all ages although the risk increases with | | | | the human papilloma virus, hepatitis B and hepatitis |
| age. | | | | C. Sometimes the disease can be as a result of |
| Signs and symptoms of the disease can be | | | | genetic factors. |
| divided into local symptoms, symptoms of | | | | People also need to know that cancer can be |
| metastasis and systematic symptoms. Local | | | | investigated through several medical tests. They |
| symptoms include unusual lamps, hemorrhage, | | | | include blood tests, x-rays, CT scans and |
| pain, ulceration and jaundice. Metastasis symptoms | | | | endoscopy. Another important thing to note is |
| of cancer include enlarged lymph nodes and liver. | | | | that depending on the type, cancer can be |
| Others are bone pain as well as fracture of the | | | | treated by surgery, chemotherapy, radiation |
| affected bones. Systematic symptoms on the | | | | therapy, immunotherapy, monoclonal antibody |
| other hand include fatigue, weight loss, lack of | | | | therapy and hormonal therapy among other |
| appetite and excessive sweating especially at | | | | methods. |
| night and anemia. | | | | |