Cancer or Neoplasma is the appearance of a tumor. A tumor is an uncharacteristic gathering of a tissue, the enlargement of which is extreme as well as ungraceful and persists even after the cessation of the stimulus which provokes the changes. It is an abnormal mass because the tumor cells are not governed by laws of growth and nutrition. The growth is uncoordinated because cellular proliferation is endless, purposeless and at the cost of nutrition of other parts of the body. The fact that it persists even after the cessation of stimulus, indicate an irreversible alteration in the genetic set-up of the cell. A tumor may be benign (tumor growth rate is slow, constant, remains capsulated and do not undergo infiltration or metastasis) or malignant (tumor growth rate is fast, irregular, uncapsulated and undergoes infiltration or metastasis. 1.1 What is Cancer?
Cancer is a disease which occurs when changes in a group of normal cells within the body lead to uncontrolled growth causing a lump called a tumour; this is true of all cancers except leukaemia (cancer of the blood). If left untreated, tumours can grow and spread into the surrounding normal tissue, or to other parts of the body via the bloodstream and lymphatic systems, and can affect the digestive, nervous and circulatory …show more content…
In an average adult the liver weighs approximately three pounds and is about the size of a football. It is located in the right side of the body, just under the right lung, and is protected by the rib cage. The liver is shaped like a pyramid and is divided into right and left lobes. Unlike most other organs, the liver gets blood from 2 sources. The hepatic artery supplies the liver with blood that is rich in oxygen, and it is about 20% of the blood supply. The portal vein carries nutrient rich blood from the intestines to the liver, and is about 80% of the blood supply to the