There are various mouth cancer symptoms (Julia) There are many different resources with oncology description. Treatment of cancer is pretty hard so oncology (medical specialty on cancer treatment) includes many other medical specialties because oncologist has to treat disease effectively not making any harm to the patient. There are many different web sites in the internet dedicated to medicine. There you can find detailed oncology description. Just by reading through this oncology description you can understand that there are many hard tasks faced by oncologists in their everyday work. Oncology deals with all the questions related to cancer from diagnosis of the disease to post operative care and control. Diagnosis is very important step in treatment of disease because the earlier cancer is found the more effective the following treatment will be. That is why in most of the oncology descriptions you can find a recommendation of so-called screening. This procedure allows recognizing cancer on the stage when there are still no evident symptoms. It is also highly recommended to read about possible symptoms of different cancer types (these can be found probably in any oncology description) to recognize the disease as early as possible. Tree major methods of cancer treatment are widely spread in modern oncology - surgery, chemotherapy and radiotherapy. Each method has its advantages and disadvantages and difficulty of oncologist specialty in that he or she needs to make a choice between these methods or find the most appropriate combination of methods. The first method - surgery - is used for removal of solid tumors (for example mastectomy in case of breast cancer and prostatectomy in case of prostate cancer). And it provides high efficiency of treatment. But the problem is that this method can not be applied if metastasis is present or tumor is inoperable. Sometimes it is impossible to remove the tumor only so the removal of entire organ is needed. This makes the surgery pretty harmful for the patient. In case of chemotherapy special drugs are used. These drugs are oriented at destroying fast dividing cells thus affecting cancer. But that is also a problem of this method - there are healthy cells that divide fast so the drugs will also affect these cells. But luckily healthy tissues repair themselves after chemotherapy. Unlike chemotherapy radiotherapy targets only one particular part of the body. And with modern technique this method can be very precise. But still patient gets higher dosage of radiation which is also harmful. Very often the combination of different methods is used to make treatment more effective so there is a team of specialists that works with patient. But still it is oncologist who makes the decision about the methods to be used. And here come oncology ethical issues - it is needed to find right combination and precise dosage. And according to any oncology description there is always a way to prevent the development of the disease or at least slow it down. There are certain risk factors man should avoid lowering the possibility of cancer. In fact not very hard changes in lifestyle can make a huge difference.