A tumor has well-defined symptoms  ie regardless of type of cancer?
The answer is no.
Malignancy and cancer are terms and phrases that, beyond the distinctions more or less of certain technical authors, indicate a severe problem borne organism which can also be fatal. Very generally we can say that a cancer is a disease characterized by progressive and uncontrolled cell proliferation. The growth of a tumor leads, within a specified period of time, the destruction of normal tissue resulting in decay of the specific functions of that tissue and also has a tendency to invade surrounding tissues, and finally you must consider the fact that as the malignant cell proliferation increases can come off malignant cells, blood and lymph through the streets, they can reach and attack the tissues more distant rise to new formations that are called malignant tumor metastasis. There are many types of malignant tumors and their characteristics can be very different depending on the type of tissue that attack, their behavior, their aggressiveness and so on.

Cancer: What are the symptoms?
Molti mistakenly continue to believe that the majority of deaths caused by disease processes is related to malignant tumors, but in fact are the types of cardiovascular disease than those who are responsible for most deaths due to illness. It is true that, in the popular imagination, the tumor remains a mysterious disease, subtle and difficult to treat successfully (and, in part, this is a certain element of truth). But many have been steps forward in the fight against cancer and it can be said that, being affected by cancer does not mean inevitably be sick without hope. Certainly a big hand in this fight can give us, through a healthy lifestyle. How often emphasize a good lifestyle is the first and irreplaceable drug.
For years, we know that, in addition to the aforementioned lifestyle, one of the winning weapons against cancer is the earliness with which it intervenes in the fight: the sooner the cancer is discovered so the higher the likelihood to intervene with some success . Unfortunately it is not always easy to act quickly because the vast majority of malignant tumors has, at least in the early stages, symptoms so generic and insignificant that it is not immediately associate them with a tumor. It therefore seems quite smoky and pretentious to talk about “symptoms of cancer” Cancer is a disease, the cancer is “many diseases and these diseases, as mentioned above, are very different and it is simplistic and reductive to unite talking about all symptoms of the tumor. Nevertheless, many people seek online information about the symptoms of cancer and this article was written precisely to answer dozens of emails in which the writer asks “if you have cancer, maybe after having described a single symptom.
This attitude is not only counterproductive, but is likely to trigger intervention procedures wrong (to have an attack of diarrhea does not mean that by just going to die because of colon cancer, often getting up to urinate at night to go is not to say that we are now sentenced to death because of prostate cancer …).
First you should understand that:

There are not common symptoms of a tumor that are not present in all benign diseases.

For example:

• The presence of an enlarged lymph node can be a symptom of cancer, but also that of a simple infectious mononucleosis;
• A new (not to mention a wart) can swell naturally and completely benign melanomas, for example, have a way to evolve quite characteristic and specific;
• Cough without other manifestations against upper airway may simply be a symptom of laryngitis trivial;
• The presence of blood in the stool can be a symptom of banal anal fissure or hemorrhoids;
• The presence of blood in the urine sample is completely normal in those who have a kidney stone or even athletes (hemoglobinuria);
• The difficulty in digesting it is also common in a normal gastritis or an ulcer;
• Loss of appetite (and consequent weight loss) is common to hundreds of diseases.

I mean, talk about “symptoms of cancer is so much wrong from the medical point of view and also from the logical because each tumor has specific symptoms.
In the presence of a symptom, therefore, the watchword is to investigate by contacting your doctor, but without falling into the spiral of hypochondria, immediately think of a tumor without hope.

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