NEOPLASIA: new abnormal growth

A neoplasm " is a abnormal purposeless mass of tissue, the growth of which exceeds and is uncoordinated with that of normal tissues, and which persists in the same excessive manner after cessation fo the stimuli which evoked the change"

• Tumor is the results of swelling:
  • Benign tumor -- no infiltration into surrounding tissue.
  • Malignant tumor = cancer