Hyperplasias and Neoplasms

• A hyperplasia is an increase in cell number; overgrowth in response to some type of stimulus. 
• Tumor: Swelling or growth, originally used in the description of the swelling related to inflammation.
• Benign: having limited growth; noncancerous
• Malignant: deadly or progressing to death; cancerous 
• Encapsulated: enclosed in a capsule; term used to describe benign tumors.
• Cancer: any malignant tumor
• Metastasize: to move or spread.
• Metastatic: spreads from a site or origin to a secondary site in the body.