Cancer Flashcards
The following flashcards are going to be based on the cancer recording from in class lecture
something to keep in mind is that every part in our body can develop what?
cancer
as a new grad, can you hang chemo ? why or why not
no we can’t, because of the fact that is so intense and we need additional training
what does cancer mean ?
group of diseases characterized by uncontrolled and unregulated growth of cells
your body has these cells named ____that functions as a protector against cells in your body that are trying to become cancerous
turmor necrosis factors
we understand that chemotherapy is a poison, and we have to use special precautions and be certified to hang chemo up. Its been very effective in treating patients who have been diagnosed with cancer. However, what is the sad part of patients who end up being cured from cancer?
they are more likely to develop it again
what are the 2 major dysfunctions in the the process of cancer development?
in other words, what are the 2 ways normals cells turn into cancer cells?
- defective cell proliferation ( growth )
- defective cell differentiation
what is defective cell proliferation ( growth ) mean?
what is defective cell differentiation ?
healthy cells are controlled by an intracellular mechanism that determines proliferation
- cancer cells do not regulate their growth normally, meaning they end up growing on top of one another
a defect in cellular differentiation is that when the cells are starting to mature and develop, they dont ever mature fully/divide fully and so they stay the same
( this can only be diagnosed as genetics )
what are the 4 stages a cancer cell develops?
initiation
promotion
latent period
progression
describe to me what happens in each phase
initiation
promotion
latent period
progression
genetic mutation of a cell
( start of the changes )
reversible proliferation of altered cells
( can reversible !!! )
period of time that can elapse between initiation and/or proliferation and progression to the point where there is clinically evident disease
increased growth rate of altered cells, cells become invasive and eventually metastasize
what’s the big thing around the promotion phase of the development of cancer?
its reversible
- meaning your body can either fight off the cancer cell or simply the cancer cell mutates even more and heads into the latent period
what does carcinogens mean ?
notes
- many are detoxified by protective enzymes and are harmlessly excreted
- failure of protective mechanisms allow them to enter cells nucleus and alter DNA
cancer causing agents capable of producing cell alterations
what are some examples of carcinogens?
smoking
asbestos
radiation
the more you are exposed to a carcinogen or practice that carcinogen ( such as smoking ) the greater the what?
risk of developing cancer
what does metastasis mean and how is it applied to cancer?
metastasis means the ability of a cancer location to spread to another site
so meaning if you have lung cancer, you have a greater chance of developing brain cancer cause of its ability to spread
possible test question
if you have breast cancer, where is it more likely to spread to?
your bones = bone cancer
one of the things that we do as nurses is that we collect data on ______ in order to evaluate how far the cancer has spread
sentinel lymph node
additional information to understand what im going to ask you.
we understand that lymph nodes are all lined together in like a chain, so no matter where in the body when there is an infection or possible injury, all those lymph nodes will swell up together.
however in cancer, its the same thing, but instead of looking at all the lymph nodes. we end up just looking at the sentinel lymph node as its known to be what?
the indictor of being positive or negative of cancer.
meaning if the sentinel lymph node is not effected , then the chances of it being cancerous is very unlikely
however something important to remember about the sentinel lymph node detection or prognosis is that its not 100% accurate to depend on.
for the reason of ?
skip metastasis
- meaning the tumor cells skip regional nodes and travel to distant nodes
- in smaller terms, the cancer ignore the sentinel lymph node
what is the role of the immune system?
to be able to fight off infection by using lymphocytes and other white blood cells
its very sad to say but cancer cells can create _______ to digsuise themselves from the lymphocytes
TAA
- tumor associated antigens
we have specialized cells in our body for certain jobs, tell me what each of these 3 do
cytotoxic T cells and natural killer cells?
tumor necrosis factor ?
colony stimulating factors?
search out and destroy cancer cells
causes hemorrhagic necrosis of tumor cells
encourage growth of white blood cells
tumors can be both benign and malignant.
what does benign mean?
what does malignant mean?
what makes them different?
non-cancerous
cancerous
malignant tumor cells can invade and metastasize
what is the appearance or feeling of a benign tumor vs a malignant tumor?
benign
- mobile, usually non tender, smooth
malignant tumor
- fixed, rough, tender