Nurb test 4: cancer Flashcards
=tumor suppressor genes, mutated but not highly mutated, turns of the cells division , gets turned off when you have a mutated cell dividing uncontrollably turns off turns into an ___
proto-oncogenes
Turn intoOncogene
- permanent change (irreversible)in the cell’s structure=mutated, allows the growth doesn’t regulate, from single exposure
- proto-oncogenes
- oncogenes
Initiation
=tumor growth gene allows the cell to keep dividing, no turning it off
oncogene
- goes to proto-oncogenes to oncogenes increasing and keeps dividing
Prolonged exposure, speeds up cell division
Promotion
- no contact inhibition, keeps growing, goes where ever it wants to go
Grow out of control
Progression
three staged in development of cancer
initiation
promotion
progression
originate from skin, glands, mucous membranes linings of respiratory tract, GI tract, and GU tract.
Carcinoma
originate from connective tissue, muscle, bone, and fat.
Sarcomas
originate from the hematopoietic system or lymph nodes.
Lymphoma and Leukemia’s
- you don’t see any or very few cancer cells, most generally won’t see, rare
Grade X
- best to have, cells resemble parent cell, differentiated= stay in one part and look like regular cell, hasn’t mutated that much Ex: pancreatic cell
Grade I
- less differentiated= can tell it is of that parent cell but not exactly like that parent cell
Moderate differentiated
Grade II
- cells are reverting back to a fetal stage, becoming undifferentiated, means you can’t tell where they are coming from and what their parent cell is
Poorly differentiated
Grade III
- cells are undifferentiated in fetal appearance, can’t tell what the parent cell is
- When doing a biopsy it tells you lower the grade more probability to treat it, where it located from, better chance if lower grade
Grade IV
-insite to=tumor is encapsulated a lining around it, tumor cells are not getting out, can do a lumpectomy remove it/ best to have
Stage 0
- in that area, no movement Ex: breast cancer biopsy is just in that area
Stage I
- still in that area but beginning to branch out a little bit
Stage II
- branched out, going into the lymph system Ex: breast cancer to lymph system
Stage III
- metastasized to other area
Stage IV
tnm
t classification
tumor size
-degree of regional spread to the lymph nodes, involvement 0-4, rate by how many nodes they took out / number of nodes divided by 4 = n / can only take out 16, can range 4-16 nodes
N tnm classification
T rate it 1-4 T1= T2= T3= T4=
T
- 1-3
- 4-6
- 6-9
- more than 10 cm
Based on 8 nodes N0= N1= N2= N3= N4-
N
- no involvement
- 1-2
- 3-4
- 5-6
- greater than 6
M-metastasis-: 0-4 M0= M1= M2= M3= M4=
- no mets
- to one area or 1 organ, most generally it close to the original site Ex: breast to lung
- two different areas close to it
- two -three area, plus distance Ex: prostate mets to lung and to bone
- more than three organs