nec209 Posted April 15, 2014 Posted April 15, 2014 Why are some cancers have much higher cancer survival rate than other types of cancers?What types cancers have higher survival rate than other types of cancers. Looking at this http://2.bp.blogspot.com/-Yn1crn6Gpak/T476j27qtQI/AAAAAAAAAz4/NhkYXSVFGBs/s1600/Survival+Rate+by+Cancer+Type.png Looking at it Pancreas ,Liver,Bile duct ,Esohagus ,Lungs ,Bronchus ,Stomic ,Mutiple Myeloma ,Brain and Leukemia have very bad survival rate. http://2.bp.blogspot.com/-Yn1crn6Gpak/T476j27qtQI/AAAAAAAAAz4/NhkYXSVFGBs/s1600/Survival+Rate+by+Cancer+Type.png http://avondaleassetmanagement.blogspot.ca/2012_04_01_archive.html Why is it hard to make drugs to fight of the cancer?
Moontanman Posted April 15, 2014 Posted April 15, 2014 Cancer is not a single disease, some types are harder to detect than others and some are harder to cure and some are both. The main reason it's hard to find drugs to fight off cancer is that the cancer is made up of our own cells. You have to find something that will target cancer cells but leave healthy cells alone. Cancer cells are often killed by our own immune system, in fact cancer forms quite a bit more often than is reported because your own immune system finds and kills cancer cells until one forms that doesn't appear to be abnormal to your own immune system then it spreads... I've had prostrate cancer, caught early it is easy to cure, caught late not so much, this type of cancer runs in my family. My great grandfather died of prostrate cancer but now it can be cured via prostrate removal if it caught before it begins to spread..
physica Posted April 16, 2014 Posted April 16, 2014 What people don't take into account is that medicine is a practical trade. Whist science is the foundation of medicine very little science is considered on the daily practice of medicine. Your average medical consultant wont be able to comprehend the probability of a dice role. This is what pushed me to leave and study physics. In my clinical experience it's certain practicalities that effect the outcomes in medicine. Looking at it Pancreas ,Liver,Bile duct ,Esohagus ,Lungs ,Bronchus ,Stomic ,Mutiple Myeloma ,Brain and Leukemia have very bad survival rate. Look at the list you've given here. It's hard to cut these out. let's say you have a tumour on one kidney or one breast, you can simply cut out that kidney or remove the breast and replace it with a fake one from plastics, the patient will survive. Removing the brain isn't a practice treatment. Another big thing is politics. Detection is important. detect it before it's spread and you've got a good chance. Certain medical organisations get on their high horse and pressure government. A good example was breast cancer. Medical associations with the backing of the feminist movement pushed for routine screening for women over a certain age. Sometimes a celebrity will get cancer of a sort and act as if the whole world revolves around this particular type of cancer. it's all practicalities and politics. -1
CharonY Posted April 16, 2014 Posted April 16, 2014 This is one the things which make me dubious about claims of personalized medicine. In an actual medical setting you need rather easy decision making systems based on simple diagnostics (relatively speaking). However, the promise of more data also means that data analyses and subsequent diagnostics is going to be complicated. In bio, this is still a very ongoing and often unresolved problem. For practical medical approaches it will be even worse.
nec209 Posted April 17, 2014 Author Posted April 17, 2014 (edited) Cancer is not a single disease, some types are harder to detect than others and some are harder to cure and some are both. The main reason it's hard to find drugs to fight off cancer is that the cancer is made up of our own cells. You have to find something that will target cancer cells but leave healthy cells alone. Cancer cells are often killed by our own immune system, in fact cancer forms quite a bit more often than is reported because your own immune system finds and kills cancer cells until one forms that doesn't appear to be abnormal to your own immune system then it spreads... I've had prostrate cancer, caught early it is easy to cure, caught late not so much, this type of cancer runs in my family. My great grandfather died of prostrate cancer but now it can be cured via prostrate removal if it caught before it begins to spread.. Why does the human immune system not destroy it? Can the human immune system pick out cancer cells vs normal cells. Do cancer cells have markers on them that the immune system or drugs not target them. I read about target drugs in the future. Edited April 17, 2014 by nec209
Prometheus Posted April 17, 2014 Posted April 17, 2014 Why does the human immune system not destroy it? Can the human immune system pick out cancer cells vs normal cells. Do cancer cells have markers on them that the immune system or drugs not target them. I read about target drugs in the future. That is correct. http://en.wikipedia.org/wiki/The_Hallmarks_of_Cancer#Evading_apoptosis There are developments towards flagging certain cancer cells for the immune system to target.
nec209 Posted April 18, 2014 Author Posted April 18, 2014 Looking at the stats 1/2 people who have cancer will die. It can also be difficult to say whether a cancer has been cured because it can come back many years later. So doctors tend to talk about 5 year survival rates. This means the percentage of people who are alive 5 years after they were first diagnosed with cancer. Many of these people will have been cured. If cancer is going to come back, many types are most likely to return within 2 years of being diagnosed and treated. But some people included in the 5 year survival statistics will not have been cured because their cancer will come back more than 5 years later. For all types of cancer, the latest available figures are for 2000 to 2001. They show that 43% of men and 56% of women live for more than 5 years and so may be cured. http://www.cancerresearchuk.org/cancer-help/about-cancer/cancer-questions/what-percentage-of-people-with-cancer-are-cured That is correct. http://en.wikipedia....ading_apoptosis There are developments towards flagging certain cancer cells for the immune system to target. About 40% of people will get cancer in there life time.This treatment you talk about sounds very new and probably does not work will all types of cancers out there.
HRS Posted May 2, 2014 Posted May 2, 2014 To scream off the nanotech bandwagon as it drives by this conversation, there is a proposed method for destroying cancer cells using a "nanorobot." Proposed. Some of you likely have heard of this, and probably have a better, more technical grasp on the scoence. The concept is to inject little nanobots that are set to attach only to cancer cells specifically because of certain qualities specific to the patient and the cancer, and attach to them (I believe by an electrostatic signature specific to the cancer cell). They then would basically inject the cells with bee venom to kill cancer cells. They would hypothetically inject thousands into the system in treatments. All propsed of course but hopeful. This hopefully would be more effective and make certain cancers have an extremely higher survival rate.
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