The most frequent types of cancer are bowel cancer, breast cancer, lung cancer and prostate cancer. Malignant tumors can generally arise out of any kind of cell and organ of the body. But the degree of severity can vary enormously. Some cancer diseases can cause death quickly if not treated, whereas others do merely grow within several years without therapy.
Malignant tumors/cancer include carcinoma, sarcoma, tumors of the nervous system, malignant melanoma and diseases of the blood and lymphatic system like leukemia, lymphoma, multiple myeloma, myeloproliferative diseases and myelodysplastic syndromes.