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Published byLaurence Shields Modified over 9 years ago
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Cancer
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Cancer Facts: 1 in 3 will get cancer 1 in 3 will survive it 3 out of 4 families have a family member with cancer 50% of cancer could have been prevented 50% of deaths could have been prevented with early treatment
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Key Question Why do so many people WAIT TOO LONG to be treated for cancer?
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Answer: The symptoms of cancer are very similar to the symptoms of other, less dangerous diseases. Pain is rarely a symptom of early stage cancer.
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Normal cells resist “piling up” when grown in cell cultures.
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Henrietta Lacks “HeLa” cells originated in her cancer tumor
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Cancer cells (stained blue) have: 1.Larger “mitotic” nuclei-abnormal amounts of division 2.Less cytoplasm- an indication of how they DON’T function anymore Normal cells
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Loss of Normal Growth Control Cancer cell division Fourth or later mutation Third mutation Second mutation First mutation Uncontrolled growth Cell Suicide or Apoptosis Cell damage— no repair Normal cell division Apoptosis, or “cell suicide,” is the mechanism by which old or damaged cells normally self- destruct
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Malignant versus Benign Tumors Malignant (cancer) cells invade neighboring tissues, enter blood vessels, and metastasize to different sites Time Benign (not cancer) tumor cells grow only locally and cannot spread by invasion or metastasis
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Key Question Why do so many people WAIT TOO LONG to be treated for cancer?
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Normal blood Leukemia
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Early: Fatigue Anemia, paleness Late: Easy bruising Weight loss
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Normal LiverLiver Cancer
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Early: Loss of appetite Weight loss Late: Tenderness Low fever
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Normal ColonColon polyp
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Early colon cancerLate colon cancer
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Colon Cancer Early: None Late: Blood in stools “tarry” Feeling of fullness Change in bowel habits; narrow caliber stools
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Normal LungLung with Cancer
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Lung Cancer Early: Persistent cough Blood in sputum Late: Wheezing Fatigue and weakness Weight loss and maybe pain
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Normal KidneyKidney cancer
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Kidney Cancer Early: Appetite and weight loss Low grade fever Late: Vomiting Mild low back pain Headache, bad breath
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Normal testicleTesticular cancer
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Testicular Cancer Early: None Late: Sense of fullness in the scrotum Noticeable enlargement
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A man with breast cancer… Rare but not impossible
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Normal mammogramBreast cancer
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Breast Cancer Early: None Late: Noticeable enlargement, asymmetry, vague discomfort,
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