Health Sciences 1001A/B Chapter Notes - Chapter 8: Lymphatic System, Metastasis, Epithelium
9 Apr 2020
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Document Summary
Tumour: a mass of tissue that serves no physiological purpose. Every case of cancer begins as a change in a cell that allows it to grow and divide when it should. Tumours may be felt as a lump or identified by an indirect symptom not. Metastasis: the spread of cancer cells from one part of the body to another. Once a tumour is established, it can recruit normal cells, modify them, and use them as envoys to travel to different parts of the body and prepare other sites to receive travelling cancer cells. Staging: a method of classifying the progress or extent of a cancer in a person. To identify a cancer"s stage, physicians assess: New tumours are called secondary tumours or metastases. Size or extent of the primary tumour. Whether the cancer has invaded nearby lymph nodes. Cancer retains some of the properties of the normal cell at first. Carcinomas: cancers that originate in epithelial tissue.
