CancerWhat is Cancer?
When a collection of cells projects uncontrolled growth in a human body through abnormal division and invasion of the same to adjoining tissues, it is detected as a disease known as Cancer. Cancer cells spreads to different parts of body through blood or lymph. Cells are the roots of the body and the cancer attacks and damages the DNA in the cells. When the cancer attaches itself to the cells, they start developing new cells which are not required by the body.
These new ones also have the same damaged DNA of the parent cells and from here they build their way further to harm the organs of the body. This is the reason that makes cancer a fatal disease. Some of these may also grow into a tumor, which are not life threatening.
Up to 90 to 95% of cancers are basically caused due to environmental factors, lifestyle, and the rest as heredity. The major factors that cause cancer are tobacco, daily food habits, lack of physical exercise, radiations, infections, etc.
With advances in medical science now it has become possible to cure the cancer. But it heavily depends on which stage the cancer is detected. The chances of recovery get slim with every advanced stage. Usually a biopsy is carried out to determine the stage of the cancer. It is significant to note that a few types of cancer do not show any symptoms until they reach the advanced stages. That is why the detection and risk estimation are imperative for its prevention at an early stage. Cancer can be suspected on the basis of symptoms, or results of radiology. In most of the cases, this disease can be treated through radiotherapy, chemotherapy and surgery. While cancer can affect people of all ages the risk of the same increases with age.
The most common types of cancers diagnosed are:
Types of Cancer:
There are types of cancer can be assembled into wider categories. Following are the major categories of cancer:
- Carcinoma - Cancer which starts in the skin or in tissues that cover internal organs
- Sarcoma - Cancer with roots in bone, muscle, fat, blood vessels, cartilage, or other connected tissue
- Leukemia - Cancer which begins in blood, forming tissue such as the bone marrow and causes large number of abnormal blood cells to be formed and go into the blood
- Lymphoma and myeloma - Cancers that starts in the immune system cells
- Central nervous system cancers - Cancers with roots in the tissues of the spinal cord and brain