Episode 92:  Learn the difference between carcinoma, sarcoma, mesenchymal tumors, oncogenesis, and the protooncogenes. NEOPLASIA I. Nomenclature: Benign vs. malignant A. Difference between benign and malignant cancer: Main difference – Benign usually does not metastasize, malignant has the capacity to metastasize. Exception: B9 tumor that metastasize: invasive mole (metastasize to lungs, but goes away). B. […]