Know about Cancer - Basics of Cancer and all types of CANCER

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Understanding Cancer

Understanding Cancer


What Is Cancer?

Cancer is uncontrolled growth and spread of abnormal cells.

2We use the term cancer to refer to a group of almost 200 different diseases. Our bodies are made up of about 30 trillion cells. The cells group together to form tissues and organs. Cancer can arise in any of those cells.

For example, stomach cancer is a different disease than breast cancer. It has different treatments, etc. There are even different types of breast cancer and skin cancer, etc.

Growth of Cancer CellsSize of cancer cells: One million cancer cells = head of a pin

One billion cancer cells = a small grape

230 = 1,073,741,824 = 1 billion cells

2-6 weeks

Cancer cells reproduce every 2-6 weeks.2-6 weeks2-6 weeks

3If cancer cells divide every month, it would be 2 1/2 years before one cancer cell grows into a small grape-sized tumor.

Signs and Symptoms of CancerChange in bowel habits or bladder functionsSores that do not healUnusual bleeding or dischargeLumps or thickening of breast or other parts of the bodyIndigestion or difficulty swallowingRecent change in wart or molePersistent coughing or hoarseness

4Not having symptoms does not mean there is no cancer.

A change in bowel habits or bladder function. Chronic constipation, diarrhea, or a change in the size of the stool may indicate colon cancer. Pain with urination, blood in the urine, or change in bladder function could be related to bladder or prostate cancer. Any changes in bladder or bowel function should be reported to your doctor.

Sores that do not heal. Skin cancers may bleed and resemble sores that do not heal. A persistent sore in the mouth could be an oral cancer and should be dealt with promptly, especially for patients who smoke, chew tobacco, or frequently drink alcohol. Sores anywhere on the body should not be overlooked.

Unusual bleeding or discharge including discolorations such as black, brown or red. Unusual bleeding can occur in early or advanced cancer. Coughing up blood is a sign of lung cancer. Blood in the stool could be a sign of colon or rectal cancer. Cancer of the lining of the uterus (eudiometrical cancer) or cervix can cause vaginal bleeding. Blood in the urine is a sign of possible bladder or kidney cancer. A bloody discharge from the nipple may be a sign of breast cancer.

Thickening or lump in breast or other parts of the body. Many cancers can be felt through the skin, particularly in the breast, testicle, lymph nodes (glands), and the soft tissues of the body. A lump or thickening may be an early or late sign of cancer. Any lump or thickening should be reported to your doctor. You may be feeling a lump that is an early cancer that could be treated successfully.

Indigestion or difficulty swallowing. These symptoms may indicate cancer of the esophagus, stomach, or pharynx (throat).

Recent change in a wart or mole. A change in color, loss of definite borders, or an increase in size should be reported to your doctor without delay. The skin lesion may be a melanoma which, if diagnosed early, can be treated successfully.

A nagging cough or hoarseness. A persistent cough that does not go away is a sign of lung cancer. Hoarseness can be a sign of cancer of the larynx (voice box) or thyroid. These are often late signs of cancer.

Additional general symptomsUnexplained weight lossFeverFatiguePain

What Causes Cancer?

LifestyleEnvironmentFamily History


Lifestyle Risks

SmokingDiet high fat and low in fruits and vegetables

Obesity/Lack of exercise

Unprotected exposure to the sun, (UV) rays

6Two-thirds (67%) of all cancers are caused by the way we live.Obesity is a lifestyle risk for developing cancer. In Utah 18% of adults are obese.

Environmental Risks

Second hand smoke

Air pollution

Industrial pollution

Chemical exposures

7Researchers have estimated that between 2 and 8 percent of cancers can be attributed to workplace exposures. In the United States, this would represent between 24,500 and 98,000 new cases of cancer each year.Diesel exhaust and other pollutants are linked to lung cancer, but unless you have had prolonged exposure, your risk is low. The Environmental Protection Agency regulates diesel exhaust emissions from motor vehicles under the Clean Air Act.Smokers have 10 times the risk of getting lung cancer than a non-smoker.

Inherited Risks

Less than 15% of cancers are inheritedGene mutations are linked to some inherited cancersCancers that may be caused by inherited gene mutations are:Colon cancerBreast cancerOvarianProstate cancerSkin cancer


Colon Cancer

Most colon cancers start as a polyp

Removing polyps can prevent colon cancer

Advanced bleeding cancer A polyp

Colon Cancer Screening GuidelinesAge of 50 and older; younger if there is a family history Yearly fecal occult blood test (FOBT) orFlexible sigmoidoscopy every 5 years orYearly FOBT and sigmoidoscopy every 5 years orDouble-contrast barium enema every 5 years orColonoscopy every 10 years

10The combination of FOBT and flexible sigmoidoscopy is preferred over either of these two tests alone.Colonoscopy is the best method since it can view the entire colon and remove polyps at the same time.

Breast Cancer Screening GuidelinesYearly mammograms starting at age 40 and continuing for as long as a woman is in good health. Clinical breast exams (CBE) should be part of a periodic health exam, about every three years.Women should report any breast change promptly to their health care providers. Breast self exam (BSE) is an option for women.Women at increased risk (e.g., family history, genetic tendency, past breast cancer ) should know benefits and limitations of starting mammography screening earlier, having additional tests (e.g., breast ultrasound or MRI)Know myths and facts about breast cancer

11Age 20 and over breast self-exams for women 20 and over should be done monthlyClinical breast exams for women ages 20-39 should be done every 3 years Women 40 and over should have an annual clinical breast exam and a mammogram every one, to two yearsIf you have a family history of breast cancer, you should start ANNUAL clinical breast exams and mammography at age 30 .

One in Eight Women Will Be Diagnosed With Breast Cancer in Her Lifetime (lifetime, living to age 80)

Cervical Cancer Screening Guidelines Annual pap testing should begin with the onset of sexual activity or at age 18 Investigate pros & cons of new HPV vaccine Pap testing should continue less frequently at the discretion of the medical provider and patient after three or more annual tests have been normal

12The good news is that cervical cancer is preventable and curable if it is detected early; in fact, the occurrence of deaths from cervical cancer has declined significantly over the last 20 to 30 years. Cervical cancer screening should be done every year with regular pap tests or every two years using liquid based pap tests. At or after age 30, women who have had three normal test results in a row may get screened every two to three years.

Prostate Cancer Screening Guidelines

Men should speak to their doctor about the pros and cons of prostate cancer screening

Both prostate specific antigen (PSA) and digital rectal examinations (DRE) are recommended for men over 50 and who choose to undergo screening for prostate cancer

13Consider a yearly PSA blood test and DRE starting at age 50, or at age 45 if you are at high risk ( African American, or have a father or brother diagnosed with prostate cancer at a younger age). PSA is a blood test that measures the level of protein produced by the prostate gland. High levels of this protein is maybe a risk factor for prostate cancer.

Testicular Cancer Screening GuidelinesDoctors agree that examination of a mans testicles is an important part of a general physical exam. It is recommended that a testicular exam be conducted during routine cancer-related checkups.

It is believed that it is important to make men aware of testicular cancer and that any unusual mass should be evaluated by a health care provider immediately.

Skin CancerThe ABCDs of melanoma (skin cancer):

Asymmetry: one half is not like the otherBorder: the edges are jagged or irregularColor: the color is varied, tan, red, black etcDiameter: the diameter is larger than 8mm (the top of a pencil eraser



Skin Cancer PreventionIt is important to:Protect your skin with hats, long sleeves and sunscreenDo a self examination of your skin monthlyBecome familiar with any moles, freckles or other abnormalities on your skinCheck for changes once a month. Show any suspicious or changing areas to your health care provider.

Good News!Other Ways to Reduce the Risks of Developing Cancer

Avoid Smoking or Chewing Tobacco

Cigarette smoking is the leading cause of preventable death in the USSecond hand smoke affects everyone

18More than 400,000 people die of tobacco-related causes each year, killing more people than homicides, drugs, AIDS, and car accidents combined. One out of 3 smokers die from smoking & many more become very sick.Cigarettes & other forms of tobacco are linked to stroke, heart disease, and cancers of the lung, pancreas, mouth, throat, esophagus, larynx, bladder, and cervix.Tobacco smoke contains at least 43 cancer-causing substances. Tobacco companies add ingredients to make their product as addictive as possible. Most smokers begin smoking before the age of 18 and become addicted. Tobacco compan