What is the difference between benign and malignant neoplasms?

Benign (microscopic, innocent, localized, removed surgically, pt survive, can produce morbidity or lethality sometimes) Malignant (invade and destroy surrounding, spread distant, cause death, cancers, adhere close to any part they enter in contact with, not all lead to death) Common features (two components, parenchyma (neoplastic cells, determine biologic behaviour) and host non-neoplastic stroma (CT, vessels and inflammatory cells, crucial for neoplasm growth)