types of malignant tumor carcinoma
The major types of cancer are carcinoma, sarcoma, melanoma, lymphoma, and leukemia. Carcinomas -- the most commonly diagnosed cancers -- originate in the skin, lungs, breasts, pancreas, and other organs and glands.Lymphomas are cancers of lymphocytes. Leukemia is cancer of the blood.iagnosis and Treatment. Prevention. Benign, or noncancerous, tumors -- such as freckles and moles -- stop growing, do not spread to other parts of the body, and do not create new tumors. Malignant, or cancerous, tumors crowd out healthy cells, interfere with body functions, and draw nutrients from body tissues.