malignant neoplastic disease - any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood streamlymphoma - a neoplasm of lymph tissue that is usually malignant; one of the four major types of cancer carcinoma - any malignant tumor derived from epithelial tissue; one of the four major types of cancer sarcoma - a usually malignant tumor arising from connective tissue (bone or muscle etc.); one of the four major types of cancer |