A layer of cells that line the skin, intestines, lungs, stomach, bowel or lobules of the breast are called epithelial cells.
Approximately 80 of all cancers are carcinomas. Much of the time, the word carcinoma and cancer are used interchangeably, since they often refer to the same condition.
If the cancer is found in the connective tissues instead of epithelium tissue, then call the sarcoma. If cancer cells are found in white blood cells, is called leukemia.