Week 5: Oncology - FOR 362 NOT 363 Flashcards
Cancer Epidemiology
study of distributions and determinants of cancer in population groups
What 3 things does cancer epidemiology include
incidence
mortality
disparity
Cancer Mortality
defined as death rates pertaining to cancer within a specific time frame
What is the overall trend of cancer mortality
overall trend downward
Cancer is #__ on the U.S. mortality annually
2
What is the most common cancer type of cancer mortality
lung
What are the top 4 types of cancer that cause death
- Lung
- Prostate and Breast
- Colon (Colorectal)
- Pancreatic
What are the 1st and 2nd biggest cause of US mortality
- Heart Disease
- CANCER
Which gender is more likely to die from cancer
Males
What race/ethnicity is most likely to die from cancer
African Americans` (especially males)
Cancer Incidence
defined as: # of NEW cancer cases in a specific time frame
The highest cancer type for males in incidence is ___; for females it is ___
prostate; breast
The highest cancer type incidence between both sexes is what
lung and bronchus cancer
Cancer Incidence has done what over the years
slightly decreased but generally plateaud
Cancer Disparity
Defined as : Differences in cancer measures such as incidence, mortality, screenings, survivorship between population groups
How does cancer dispairty change with the following: Age, Gender, Geograhy, Low SES, High SES
Age - risk increases with age
Gender - males > females
Geography: Cancer is clustered in certain areas
Low SES - increased risk of lung, cervical, stomach, head/neck - increased smoking
High SES - increased breast, prostate, colon cancer
Cancer Mortality differs by ___
race
What groups have higher rates of cervical cancer in females than other groups and which one of them has the highest mortality rate from the disease
hispanic/latino and black/AA women
AA/Black women have the highest rates
____ have higher death rates than all other racial/ethnic groups for many, although not all, cancer types
Black/African Americans
Despite having similar rates of rbeast cancer who is more likely to die from it than white women
African american women
The incidence of what cancer is higher in rural appalachia than in urban areas?
colorectal, lung, and cervical cancers
People with more education are less likely to do what regarding colorectal cancer
less likely to die prematurely (before 65) from colorectal cancer than those with less education REGARDLESS of race or ethnicity
Primary Prevention
measures to make sure cancer does not develop
Factors we can control regarding cancer
tobacco use
diet
lifestyle choices
occupational exposures
environmental exposures
vaccines and medications
Secondary Prevention
screening guidelines for certain kinds of cancer
What is the pattern of breast cancer screening like in those 55+
mammograms every 2 years or continue annual screening
Screening for breast cancer should continue as long as what
the woman is in good health and expected to live 10 years or longer
The American Cancer Society recommends yearly lung cancer screenings with what if you are at higher risk for lung cancer
low dose CT Scan (LDCT)
What are some factors of higher lung cancer risk that indicate need for lung cancer screening
55-74 and in fairly good health
AND
currently smoke or have quit smoking in the last 15 years
AND
have at least a 30 pack year smoking hx (a pack year is 1 pack of cigs per day per year. one pack per day for 30 years or 2 packs per day for 15 years would both be 30 pack years)
When should those over 65 not be tested for cervical cancer
those who had regular cervical testing in the past 10 years with normal results
Who else should not be tested for cervical cancer
people whose cervix has been removed by surgery for reasons not related to cervical cancer or serious pre cancer
Should those vaccinated against HPV still follow cervical cancer screening recommendations?
Yes
If you choose to be screened by something other than colonoscopy…
any abnormal test results need to be followed up with a colonoscopy
What tests are done for prostate cancer
PSA blood test with or without a rectal exam
Tertiary Prevention
reduction of disease and symptoms in cancer survivors
efforts focus on monitoring for and preventing recurrence of primary cancer as well as screening for development of second malignancies in cancer survivors)
Ways Cancer Diagnoses are Made
- Hx and Physical Exam
- Diagnostic Work Up - Radiology study, MRI, Ultrasound, nuclear med scan, endoscopy, lab study, tumor markers
- Pathology testing - surgical biopsy
Carcinogenesis
Cause of Cancer
- Initiation (Initiated cells)
- Promotion (preneoplastic)
- Progression (neoplastic)
- Metastasis (malignant)
Causes of Carcinogenesis
Environmental
hormonal
chemical
viral
radiation
immunosuppression
hereditary
Important Aspects of Benign Tumors
usually encapsulated
partially differentiated
absent metastasis
rare recurrence
slight vascularity
expansive mode of growth
fairly normal cells SIMILAR to parent cell
Important aspects of malignant tumors
rarely encapsulated
poorly differentiated
metastasis usually present
frequent recurrence
moderate to marked vascularity
infiltrative and expansive
cells abnormal and unlike parent cells
Benign (not cancer) tumor cells grow how compared to malignant (cancer) tumor cells?
benigng - grow only locally and cannot spread by invasion or metastasis
malignant - invade neighboring tissues, enter blood vessels, and metastasize to different sites