Oncology Flashcards
Cancer is the
mutation in the DNA of the cells
- genetics
- carcinogenic environmental
-sedentary lifestyle
What percentage of cancer is hereditary?
5-20
What are the good genes for the human body?
Proto-oncogene
Tumor suppressor gene
Proto-oncogene does what in the body
controls the growth of cells
Oncogene does what in the body?
uncontrolled cell growth
- mutated proto-oncogene
The tumor suppressor gene does what in the body?
slows down a cellular division
causes cell death
The mutated tumor suppressor gene does what in the human body?
uncontrolled cell growth
What are the “bad genes’ involved in cancer?
oncogene
mutated tumor suppressor gene
The differentiated cells show the
maturity or development of tumor cells
The more it resembles normal tissue the _________ it is to treat.
easier
Well-differentiated cells characteristics
resemble normal cells; mature
function more like a normal cell
grow at a slower rate
less aggressive
typically benign
Poorly differentiated cells characteristics
do not resemble normal cells
immature cells
lack of structure/function
aggressive
typically malignant
Every average person has what genes?
Proto-oncogene
Tumor suppressor gene
From the Biopsy, the pathologist determines
grade and differentiation
What differentiation is harder to treat?
poorly diff.
Benign
not cancer
- tumor cells grow only locally and can’t spread by invasion or metastasis
Malignant
cancerous
- invade neighboring tissues, enter blood vessels, and metastasize to different sites
Metastasize means
spread from the primary location
Characteristics of a Benign tumor
well differentiated
expands (encapsulated)
slow growth
NO METASTASIS
localized effects
no destruction unless blood flow impaired
What is the morbidity level of a benign tumor? unless?
minimum
unless location interferes with vital organs
Characteristics of malignant tumor
poorly differentiated cells
sends out projections to infiltrate and destroy
growth rate variable
YES METASTASIS
generalized effects (anemia, weakness, wt. loss)
extensive destruction
- excretes toxins and uses up blood supply
What is the morbidity of a malignant tumor? unless?
high
unless growth and spread can be controlled/halted
What tumor has the potential to metastasize?
malignant
If cancer has metastasized to another organ, is the cancer name changed or does it stay the same?
Ex) Starts out as Liver cancer, then spreads to the stomach
The name stays the same
still Liver cancer (primary)
How does cancer spread?
locally invasive
metastasis
Locally invasive cancer
“fingers” of cancer cells invade surrounding tissue
Metastasis
malignant cells travel through the blood/lymph system and invade other tissues or organs to form a secondary tumor
- find another similar organ to primary
What are the top 4 places for metastasis?
bone
lungs
liver
brain
If the primary is the breast, then it tends to go to the
lymph nodes first then the liver lungs or brain
Melanoma is very deadly because
by the time it appears
the body is completely exposed to the cancer
Which cancer is the most painful?
bone
Risk factors for cancer (most)
tobacco and smoking
Diet and obesity
sedentary lifestyle
occupation exposure
family hx
viruses
alcohol
socioeconomic status
pollution
UV radiation
drug and medical procedures
salt, additives, containments
What is the most common spot for breast cancer to form?
Lateral upper quadrant next to the armpit
If a patient works outside, then they should wear
sunscreen and protect skin due to the risk of occupational exposure
What is the hallmark cause of hereditary cancer syndrome?
family hx
Hereditary cancer syndrome can occur from what
cancer in 2 + relatives
cancer in family members younger than 50 y/o
the same type of cancer in multiple family members
rare type of cancer in 1 + family members
family with more than 1 type of cancer
If colon cancer runs in your family, when should you do a colonoscopy?
early because very hereditary
Viruses are difficult to
evaluate and isolate
Virus and generic structure of cells become
incorporated with each other
Initial viral infection to the development of cancer is
delayed after many years
viruses must act in conjunction with other factors in order to
develop into cancer
What virus is most common in causing cancer?
HPV
Viruses cause ________ and why is it harmful for cancer pts***
long term inflammation
immunosuppressed people
HPV can cause what type of cancer
cervical
Hepatitis B and C can cause what type of cancer
Liver
Epstein-Barr (mono) can cause what type of cancer
Lymphoma
Human Herpes Virus 8 can cause what type of cancer
Kaposi’s sarcoma
HIV can cause what type of cancer
Lymphoma
Karposi’s sarcoma
Helicobacter pylori can cause what type of cancer?
stomach ulcers
lymphoma in the stomach lining
The vaccination of the HPV
should be encouraged to avoid HPV and warts on genitalia
Hormone Replacement Therapy
estrogen
progestin
How can a hysterectomy cause cancer?
not produce estrogen and progesterone with hormone replacement therapy which causes cancer
Can hormone replacement therapy cause cancer?
yes
What type of cancers do the risks outweigh the benefits?
Ovarian
breast
uterine
lung
brain
colon
Primary prevention
health promotion and illness prevention
- reduction in the incidence of cancer
What preventions are done in primary intervention
exercise
lifestyle change
dietary change
stress reduction
avoid carcinogens
Secondary prevention
screening
diagnosis and treatment of illness
What type of screening is done in secondary prevention?
self-breast and testicular exams
pap smear
mammogram
colonoscopy
What is the goal of secondary prevention?
halt the progress of cancer through early screening and diagnosis
Tertiary prevention
disease treatment and rehab
- restore health
The goal of tertiary prevention
prevent further deterioration
Chemoprevention
use of substances to lower risk of cancer
What are the different drugs used in chemoprevention?
Selective estrogen receptor modulators
- Tamoxifen and raloxifene
- selenium
Pathophysiology of Tamoxifen
binds estrogen and progesterone to prevent them from feeding the tumor
early menopause
Tamoxifen and Raloxifene**
reduced risk of breast cancer
binds estrogen and progesterone
used for up to 5 years
What is the 1st chemopreventative drug approved?
Tamoxifen
Selenium
reduced risk of prostate cancer
What is the goal of screening?
find cancer in the early stages
What are the different types of screenings?
physical exam
lab tests
imaging procedures
genetic testing
Beginning at what age should men and women get a colorectal screening?
45
How often should a fecal occult blood test be done for colorectal screening?
yearly
How often should a flexible sigmoidoscopy be done for colorectal screening?
every 5 years
How often should a colonoscopy be done for colorectal screening?
every 10 years
What cancer is considered very treatable when caught early but very deadly when caught late?
colon
Monthly Self Breast exams need to start after
20 years old
HCP Breast exams need to be done between what years
and every ___ years
40-44 and completed every 3 years
(However, Mrs.Duriex recommends one every year after 40)
Pap smear is looking for
abnormal cells of the cervix (mostly through sex)
At age 45-54, HCP exams and mammograms need to be done
yearly
At age 55, HCP and mammograms need to be done
every 2 years
Women at high risk for breast CA need to have what yearly
MRI and mammogram
Cervical cancer screening needs to be done when
type of test every
age 21 or within 3 yrs of initiating intercourse
- pap test every 2-3 years
If the patient has dysplasia noted, then pap tests are done
annually
At the age of 30, a pap test and HPV need to be done
5 years
every 3 years with only pap test
Cervical cancer screening is not necessary if all previous tests are negative after what age
60
If the petient has had a hysterectomy, should the woman continue a pap test related to vaginal or vulvar cancer?
yes
What are the 7 warning signs of cancer? CAUTION
Change in bowel or bladder habits
A sore that does not heal
Unusual bleeding or discharge
Thickening or lump in breast/elsewhere
Indigestion or difficulty swallowing
Obvious change in a wart or mole
Nagging cough or hoarseness
Grading
pathologist compares the appearance of cancer cells to the normal surrounding cells
Staging
Oncologist classifying a malignancy by the extent of spread within the body
What does the pathologist do to cancer?
differentiation and grade
What does the oncologist do after the pathologist?
oncologist
Grading: GX
can not be assessed
Grading: G1
low grade
well differentiated, slow growing
Grading: G2
moderate grade
moderately differentiated, growing slightly faster
Grading: G3
high grade
poorly differentiated, growing faster
Grading: G4
high grade
undifferentiated, not distinct at all, very aggressive
Stage 1 CA
small cancer found in an organ where it originated
Stage 2 CA
larger cancer that may/may not have spread to the lymph nodes
Stage 3 CA
larger cancer also in the lymph nodes
Stage 4 CA
cancer has spread from the original site into other organs
PET scan
lights up inflammation in the body
TNM system of staging
T = size of primary tumor
N = # of lymph nodes involved
M = extent of metastasis
Staging Tumor Size
TX
the tumor can not be measured
Staging Tumor Size
T0
no primary tumor, can’t be found
Staging Tumor Size
Tis
the tumor is “in situ” (best case)
in 1st layer of the organ
Staging Tumor Size
T1
small or early stage
Staging Tumor Size
T2
confined to original area
Staging Tumor Size
T3
has spread to surrounding tissues
Staging Tumor Size
T4
large, advanced stage cancer
TNM classification reflects
depth of tumor infiltration
Staging: Number of Nodes
NX
Nearby nodes can’t be tested/evaluated
Staging: Number of Nodes
N0
lymph nodes are cancer free
Staging: Number of Nodes
N1
cancer cells have reached one node
Staging: Number of Nodes
N2
cancer spread to more than one node
Staging: Number of Nodes
N3
cancer in lymph nodes extensive/widespread
Staging: Extent of Metastasis
MX
UNKNOWN if cancer has spread
Staging: Extent of Metastasis
M0
no distant metastases were found
Staging: Extent of Metastasis
M1
cancer has spread to one or more distant parts of the body
In situ
still in the original layer
Localized
still in original organ
Regional
spread to nearby lymph nodes or organs
Distant
spread to distant body parts
Tumor markers
determine the effectiveness of tx
Tumor Marker CEA stands for
Carcinoembryonic Antigen
CEA tumor marker is related to
pancreas, GI (colon, lung, breast)
Normal: 0-2.5 in nonsmokers / less than 5 in smokers
When reviewing the chart for a patient with cervical cancer, the nurse notes that the cancer is staged as Tis, N0, M0. The nurse will teach the patient that
a. the cancer cells are well-differentiated.
b. it is difficult to determine the original site of cervical cancer.
c. further testing is needed to determine the spread of the cancer.
d. the cancer is localized to the cervix.
d. the cancer is localized to the cervix.
A 61-year-old woman who is 5 feet, 3 inches tall and weighs 125 pounds (57 kg) tells the nurse that she has a glass of wine two or three times a week. The patient works for the post office and has a 5-mile mail-delivery route. This is her first contact with the healthcare system in 20 years. Which of these topics will the nurse plan to include in patient teaching about cancer? (Select all that apply.)
a. Alcohol use
b. Physical activity
c. Body weight
d. Colorectal screening
e. Tobacco use
f. Mammography
g. Pap testing
h. Sunscreen use
d. Colorectal screening
f. Mammography
g. Pap testing
h. Sunscreen use
Treatment of Cancer
surgery
radiation therapy
chemotherapy
What is the most frequent treatment method for cancer?
surgery
Surgery is used in conjunction with
chemotherapy or radiation