Microsoft PowerPoint - Cancer 250 S08

Microsoft PowerPoint - Cancer 250 S08 - What is Cancer...

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1 Cancer Prevention and treatment What is Cancer? square6 Abnormal, uncontrolled growth of cells square6 Every case of cancer begins as a change in a cell that allows it to grow and divide when it should not Cancer Cell Growth square6 Can form tumors, and/or travel via the blood system/lymph system square6 Metastasis How Cancer Spreads or Metastasizes Benign versus Malignant square6 Benign tumor (slow growing, not cancerous) square6 Malignant tumor or neoplasm (fast growing, cancerous)
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2 Classifying Cancers square6 Cancers are classified according to the tissue in which they originate called the primary site square6 Tumors are graded on the basis of the degree to which the tumor cells resemble healthy cells square6 low grade (grade I) to a high grade (grade IV) square6 The stage of the disease square6 Two systems of staging: square6 5 categories (0 to stage 4 based on the cancer layers of cells) square6 TNM (tumors, nodes, metastasis ratings from 0-4) Types of Cancer square6 Four broad types of cancer are distinguished: square6 Carcinomas (epithelial tissue, including the skin, surface of body organs, outer portion of glands) square6 Sarcomas
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