Health Sciences 1001A/B Chapter Notes - Chapter 8: Hysterectomy, Pancreatic Cancer, Exploratory Surgery
26 Mar 2017
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Document Summary
After heart disease, it is the second leading cause of death. Simple changes in an individual"s lifestyle can often prevent the development of most types of cancers. It can result in death when left untreated. Not all tumours are necessarily cancerous, however many cancers present in the form of tumours. Tumours can be classified into one of two types: malignant or benign. Tumours that are benign are often composed of cells that are similar to the normal cells that surround the tumour. These cells are enclosed inside of a membrane which prevents them from invading neighbouring tissues. Tumours only become dangerous when they start to negatively impact bodily functions. An example of this is a benign brain tumour blocking the blood supply to the brain and resulting in death. Malignant tumours can spread to various sites in the body through lymphatic circulation and blood circulation, which can produce tumours in any area of the body.
