Published on

A powerpoint on cancer

Published in: Education, Health & Medicine
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide


  1. 1. <ul><li>What is Cancer? </li></ul><ul><li>By Liz Cowan (click here to enter) </li></ul>
  2. 2. <ul><li>To start off: </li></ul><ul><li>There are two different types of growths that can be cancerous. Click here to learn about cysts , and click here to learn about tumors. </li></ul><ul><li>Click here to see my resources </li></ul>
  3. 3. <ul><li> </li></ul><ul><li>Starr/McMillan-Human Biology-4 th Edition-Chapter 22 </li></ul><ul><li>Pictures Courtesy of Google Image Search </li></ul><ul><li> </li></ul><ul><li>Click here to go back </li></ul>
  4. 4. <ul><li>Most cysts are benign, but sometimes they can be cancerous. </li></ul><ul><li>A cyst is a closed sac like structure that is not a normal part of the tissue were it is found. </li></ul><ul><li>They also usually contain a gaseous, liquid, or semi-solid substance. </li></ul><ul><li>They can vary in size, some are very small, others can displace organs! </li></ul><ul><li>Click here to continue> </li></ul>
  5. 5. <ul><li>Some causes of cysts are: </li></ul><ul><li>-Wear and tear, or simple obstructions to the flow of bodily fluids </li></ul><ul><li>-Infections </li></ul><ul><li>-Tumors </li></ul><ul><li>-Chronic Inflammatory Conditions </li></ul><ul><li>-Genetic Conditions </li></ul><ul><li>-Defects in the developing organs of an embryo </li></ul><ul><li>Click here to continue> </li></ul>
  6. 6. <ul><li>Cysts on thyroid (I’ve had these) </li></ul><ul><li>Ovarian Cysts </li></ul><ul><li>Epidermal cysts on the skin </li></ul><ul><li>Plus, many more because they can occur anywhere on the body! </li></ul><ul><li>Cysts are also further classified as simple and complex </li></ul><ul><li>Click here to cont. </li></ul>
  7. 7. <ul><li>Have very weak cell to cell adhesion </li></ul><ul><li>They can form extensions which allow them to move around, which promotes metastasis </li></ul><ul><li>Metastasis is when cells break away from the parent tumor and invade other tissues </li></ul><ul><li>The ability to metastasize makes cancers malignant </li></ul>^Malignant Brain Tumor with extensions Click Here to go back
  8. 8. -This one appears to be mostly fluid filled. -It would be considered simple. Click here to go back to the main menu
  9. 9. <ul><li>A simple cyst usually just has a liquid or gas filling </li></ul><ul><li>A complex cyst usually contains a solid </li></ul><ul><li>Click here to see a picture of a simple cyst. </li></ul>
  10. 10. <ul><li>There are two types of tumors </li></ul><ul><ul><li>Malignant </li></ul></ul><ul><ul><li>Benign </li></ul></ul><ul><ul><li>Benign tumors are usually harmless, malignant tumors however, are not. Click on the types of tumors to learn more. </li></ul></ul><ul><ul><li>Click here to learn about the different types of cancer. </li></ul></ul><ul><ul><li>Click to learn about causes and treatment . </li></ul></ul><ul><ul><li>Click here to go back </li></ul></ul>
  11. 11. <ul><li>There are genetic factors, like say if someone else in your family had cancer </li></ul><ul><li>Click to learn about genetic triggers </li></ul><ul><li>There are also environmental factors </li></ul><ul><li>Click to learn about environmental factors </li></ul><ul><li>Click here to learn the warning signs </li></ul>
  12. 12. <ul><li>Change in bowel or bladder habits </li></ul><ul><li>A sore that does not heal </li></ul><ul><li>Unusual bleeding </li></ul><ul><li>Thickening or lump </li></ul><ul><li>Indigestion, difficulty swallowing </li></ul><ul><li>Obvious change in wart or mole </li></ul><ul><li>Nagging cough or hoarseness </li></ul><ul><li>Click here to go back </li></ul>
  13. 13. <ul><li>Cells are often enclosed by a capsule of connective tissue </li></ul><ul><li>They are highly organized </li></ul><ul><li>They don’t invade surrounding tissue </li></ul><ul><li>They grow very slowly </li></ul>^ Benign Brain Tumor Click here to go back
  14. 14. <ul><li>Contracting Viruses that lead to carcinogenesis (more about this on the genetic page) </li></ul><ul><li>Radiation or Sun Damage </li></ul><ul><li>Chemicals like Pesticides, Industrial Chemicals, Hydrocarbons in smoke, Plant and Fungal Carcinogens </li></ul><ul><li>Click here to go back </li></ul>
  15. 15. <ul><li>Carcinogenesis-the transformation of a normal cell into a cancer cell </li></ul><ul><li>How this happens: </li></ul><ul><li>A multi-step process usually involving outside factors, causing mutations to the genes </li></ul>Click here to go back
  16. 16. <ul><li>Sarcomas- cancers of connective tissue and bone </li></ul><ul><li>Carcinoma- arise from epithelial tissue </li></ul><ul><li>Breast Cancer- about 1 in 9 women will have it </li></ul><ul><li>Cancers in the endocrine system like ovarian </li></ul><ul><li>Oral and Lung Cancers-Lung cancer kills more people than any other type of cancer </li></ul><ul><li>Digestive system cancers like Pancreatic </li></ul><ul><li>Skin Cancers </li></ul><ul><li>Click here to learn more about testing </li></ul><ul><li>Click here to go back </li></ul>
  17. 17. <ul><li>Blood tests for tumor markers </li></ul><ul><li>Medical imaging like ultrasounds, MRI </li></ul><ul><li>Biopsy-Having the tissue removed and examined </li></ul><ul><li>DNA probe- Locate gene mutations associated with cancer </li></ul><ul><li>Click here to go back </li></ul>
  18. 18. <ul><li>Removal by surgery </li></ul><ul><li>Chemotherapy </li></ul><ul><li>Monoclonal antibodies-magic bullets to deliver lethal doses of anti-cancer drugs </li></ul><ul><li>Immunotherapy-giving substances that trigger a strong immune response against cancer cells </li></ul><ul><li>Click here to watch a video about cancer fighting food! </li></ul>
  19. 19. <ul><li>Click here! </li></ul><ul><li>Next> </li></ul>
  20. 20. <ul><li>Hopefully, you are armed with all you need to know </li></ul><ul><li>The best way to prevent is to avoid environmental factors, and if you have symptoms, get checked over! </li></ul><ul><li>Also, you may not have to be as extreme as in the video, but eat some colorful foods with anti-oxidants! </li></ul><ul><li>Go back to first slide </li></ul>