We know that according to the progress of cancer, it can be divided into early stage, middle stage and late stage. Different stages also determine the final treatment effect of cancer. For lung cancer, for example, early stage, minimally invasive thoracoscopic surgery may not only radically cure lung cancer, but also have the chance of operation, but it needs more thoracotomy. Surgery, and extensive lymph node dissection, but it may still not be able to completely eradicate cancer cells, so adjuvant radiotherapy and chemotherapy are needed after surgery. If it is advanced, then the significance of surgery is not very great, metastasis of cancer cells everywhere means that surgery can not be completely eradicated, at this time, only palliative radiotherapy and chemotherapy are needed. Targeted drug therapy to prolong the life of patients.
Unfortunately, although we all know that early detection and early diagnosis and treatment of cancer are necessary, most cancers are not always early when they are discovered, but are in the middle and advanced stages, and the treatment effect is naturally discounted.
So why is cancer in the middle and late stages when it is discovered?
Ultimately, it's because early cancer has little discomfort, sometimes even symptoms, but because it's very mild, it's easy to overlook. When some discomfort symptoms become more and more obvious, it also indicates that tumors in the body are progressing.
First, anemia, early cancer almost does not cause anemia, can cause anemia is often late cancer, on the one hand, cancer consumption caused by malnutrition anemia, on the other hand, cancer bleeding caused by the more serious anemia, suggesting that the faster the progress of cancer, the worse the treatment effect.
Second, loss of weight is an important manifestation of cancer. Similarly, early cancer does not cause loss of weight. It can cause loss of weight. It is often caused by nutritional expenditure after cancer swelling to a certain extent. If it is advanced cancer, patients may even have cachexia, so terminal cancer, patients are often thin. The bones are rugged.
Third, pain, early cancer will not be painful, causing pain is often in the middle and late stages, the more severe the pain, the longer the duration, the more suggestive the cancer is in the late stage.
Fourth, loss of appetite, cancer patients often appetite, to the late stage, it is difficult to eat anything, some people say, to the late stage, cancer patients are starving to death, which is not alarmist.
Fifth, hemorrhage, vascular-rich cancer, continue to draw nutrition from the body, but the more abundant blood vessels, the greater the possibility of rupture of bleeding, liver cancer, prostate cancer, stomach cancer, colorectal cancer, etc., may cause bleeding.