HEPATIC TUMORS 

• A neoplasm is any new growth of new tissue, either benign or malignant. 
• A benign growth occurs locally but does not spread or invade surrounding structures. It may push surrounding structures aside or adhere to them.
• A malignant mass is uncontrolled and is prone to metasta­size to nearby or distant structures via the bloodstream and lymph nodes.
• Thus it is important not only to recognize the tumor mass itself but also to appreciate which structures the malignancy may invade.