Unit 4 stuff; cancer Flashcards
what are the stages of cancer metastasis
- cancer is confined to organ of origin
- cancer is locally invasive
- cancer spreads to regional structures (ex,, lymph nodes)
- cancer has spread to distant areas of body
what type of cancer does a pap smear screen for?
cervical cancer
what type of cancer does a mammogram screen for?
breast cancer screening
What is one way you can check for prostate and ovarian cancer
blood tests
how can you screen for colon cancer
fecal occult blood test (test to find smallest amount of blood in the stool), and colonoscopy.
how is cancer diagnosed
biopsy;microscopic examination
what do scientists look for when looking for cancer
irregular shaped cells, awk size and shape of a nucleus and the cell size and shape, loss of specialized cellular features, no more organized tissue, poor tumor boundary.
what is anaplasia
loss of mature characteristics (less mature characteristics)
what is autonomy
loss of response to environmental signals.
what is the most common type of cancer
carcinomas
what part of body do carcinomas form?
cells covering external and internal body surfaces; ex) lung, breast, colon
what part of body do sarcomas form/affect
supporting tissues of body; ex) bone, cartilage, fat, connective tissue, muscle.
what part of the body do lymphomas form and affect
lymph nodes; ex) immune system body tissue
what part of the body do leukemia form and affect
immature blood cells that grow in bone marrow; will often build up in large numbers in blood stream
what does the prefix adeno mean
gland
what does the prefix chrondro mean
cartilidge
what does the prefix erythro mean
red blood cell
what does the prefix hemangio mean
blood vessels
what does the prefix hepato mean
liver
what does the prefix lipo mean
fat
what does the prefix lympho mean
lymphocyte
what does the prefix melano mean
pigment cell
what does the prefix myelo mean
bone marrow
what does the prefix myo mean
muscle
what does the prefix osteo mean
bone
what are factors associated w benign tumors
slow growing, well differentiated (cell composition), looks like original tissue, well-defined capsule, no metastasis
what factors are associated with malignant tumors
rapid growth, frequent mitosis, poorly differentiated, not encapsulated, invades local tissues, spreads easily(blood + lymphatics)
what are a few things that inc risk for cancer
tobacco use, sunshine, x-ray, viruses, bacteria, stomach cancer, hereditary.
what is the single largest cause of death from cancer
smoking
What can HIV patients develop that looks like skin lesions, but is a malignant tumor of blood vessels located in the skin.
KSHV