The Jie airtight mankind suffer from cancer reason

Annually, the cancer causes death 700 myriad peoples in the world, the our country also has 100 myriad peoples to consequently lose life.For subduing this terminal disease, the scientists paid to biggest make great effort.But until now, we still didn't find out the way of overrunning the cancer.What is the cancer ?It where come, again is how harm a person?The answer of academician in the Chinese engineering, hospital, World Health Organization cancer department adviser Sun Yan will solve people's doubt.
Problem a:How does the cancer pull down a human body
First, Sun Yan 's academician points out, cancer, also call malignant tumor, oppositely have a benign tumor.The tumor means machine body at various to lump factor under the function, the cell of part organization unusually increases to living but form of partial lump.The benign tumor easy clearance is clean, generally don't transfer and don't relapse and only squeeze and jam a function to the organ, organization.But the malignant tumor can also break the structure and function of organization, organ and cause bad dead issue of blood to merge to be infected, the sufferer finally may die because the organ function crocks up.
Academician points out that the basic unit of cancer pathological changes is a cancer cell.The human body cell aging death future reunion has new-born cell to replace it to maintain a machine body function.It is thus clear that, the human body overwhelming majority cells can increase to living, but this kind of increase to living is a limited degree of, but the increasing of cancer cell living then unending, this makes sufferer nourishment material in the body drive a great deal of depletion.In the meantime, the cancer cell can also release a various toxins and make the human body produced a series of symptom.If detection and treatment not in time, it can also transfer whole body to everywhere grow to breed and finally cause human body emaciated, have no dint, anemic, have a poor appetite, have fever and dirty machine function damaged etc..
Human body almost each part may suffer cancer to violate.Originally, human body this living creature machine circulated perfect work, however the cancer changed this kind of situation, its task was a breakage.If continue next go to, will pull down a human body.But, the tumor is different from virus, isn't an invader outside the body, its composition and organize as usual similar, therefore the machine body can not carry on identifying immunity to it.
Problem two:Cancer cell from what since then
Academician beat for instance:Human body in fact from a cellular community.Each cell shines on chapter behaviour, know when should grow an abruption, also know how to combine and form organization and organ with another cell.But set up "diagram paper" of different organization, is a gene.
The many people says that there is cancer cell inside the human body, only didn't develop.Speaks from the medical science, if can check a cancer cell, can diagnose this person to suffer from cancer.So, this kind of parlance combines inaccuracy.The medical science house thinks now:There is original cancer gene inside the everyone body, will never all there is cancer cell inside the everyone body.
Original cancer gene supervisor's cell division, propagate, the person's growth demand.For"control"ing it, the human body inside still has already suppressed cancer gene.Peacetime, original cancer gene and suppress cancer gene to maintain equilibrium, but at cancer-causing factor function under, the strength of the original cancer gene will become big, but suppress cancer gene become small and weak.Therefore, the cancer-causing factor is "key" that initiates a cancer cell growth and mainly include a spirit factor and inherit factor, life style, and some chemistry material...etc..Use"key" more together, then can start "cancer procedure":"Key" is more many, the opportunity to initiate is more big.
We can not also crack all"key"s, therefore can not also overrun cancer.
Academician points out that the tumor cell is developed since then by the normal cell"revolt"ing and just grow up tumor after many years."Revolt" cell to escape from correct path, by oneself the enactment propagate speed and accumulate 1,000,000,000 above we would realize.The cancer cell propagates speed to use to double time to compute, 1 changes 2, 2 become 4, the rest can be deduced accordingly.For example, stomach cancer, bowel cancer and liver cancer, pancreas cancer and esophagus cancer's doubling time is on the average 33 days;Mammary glands cancer's doubling time is more than 40 days.Because the cancer cell continuously doubles, the cancer more makes progress toward later period more quick.
Problem three:How to transfer cancer
"Cancer cell is very'greedy'."Academician says that it will run to it to arrive anyplace, while the path mainly has 3:When the lymph transfers generally at the earliest stage, therefore carried on tumor excision carry on the lymphoid close account swept;Put to treat in addition to project light upon original hair tumor focus, also need to project light upon surroundings lymphoid knot.The lymphoid system spreads all over all over the body, are that ideal and head that the cancer cell transfers choose passage.Lymphoid transfer usually from the near to the distant, if the mammary glands cancer transfers to arrive side armpit lymph to together knot first, after transfer lock bone up, next lymphoid knot, even to side armpit lymph knot.Directly invade blood vessel or Be got into afferent cancer cell by lymphoid tube, will arrive other parts with the blood like lung, brain, liver and bone etc., this is that the blood line transfer.The stomach and intestines way cancer often transfers to the liver and the lung, the mammary glands cancer, kidney cancer, and blood relationship lump...etc. often transfer lung, the lung cancer easily transfers to a brain, and the prostate gland cancer easily transfers a bone.Chemotherapy be in order not to the cancer cell transfer through a blood line, but exterminate cancer cell with the medicine"along the road".
There being still 1 kind transfering is less, be plant to transfer.If the cancer cell sheds off from the tumor surface and"drop"s in the chest, belly cavity and brain spinal cord chamber etc., the meeting"take root germination".Occurrence ground generally the lower part in these cavities, like the rib Ge Cape, the rectum urine bladder nest, and Lu bottom...etc..
Finally, academician points out, common people always love to say what things it's cancer-causing, in fact, we can not also say as long as don't eat what can't get a cancer, or contact what meeting get cancer.Haven't discovered now any a sow the cause a vegetable is the inevitable factor that inducts cancer.Win cancer the most important early discover, the cancer mostly could cure in early days.For this, once we want clinical survey, two is an indisposition will see a doctor.Some symptom possibilities have something to do with cancer, don't would not° until felt painful go for a doctor.