Cancer, a disease characterized by abnormal and often unpredictable growth of cells. cancerous growths are also disposed to invade normal health tissue which can be destroyed or even replace by their wild growth. Nerves maybe affected causing pain; blood vessels may be broken open by invading growth, causing hemorrhage; and structures such as lung tissues, the arteries, kidneys, or bladder maybe obstructed by infiltration of cancer tissue. Every part of the body is susceptible to cancerous growths, though some such as stomach, bowel, lung, and the sexual organs, seem more frequently involved. Accumulations of rapidly growing cells may form a lump known as a tumor, but not all tumors are cancerous or dangerous. Groups of cells which invade normal cells are malignant. Growth maybe slow or rapid, is usually progressive, and have continuous non stop growth.
![Picture](/uploads/1/7/3/1/17317476/2262356.png)
This image shows the different sites that cancer affects.
The image shows the likelihood of each type of cancer.
Sources:Fishbein, Morris. The New Illustrated Medical and Health Encyclopedia.
New York: H. S. Stuttman, 1970. Print.
New York: H. S. Stuttman, 1970. Print.
PubMed article:http://www.ncbi.nlm.nih.gov/pubmed/24654252