What is tumor? Be cancer? What symptom can ache by?

What is tumor? Be cancer? What symptom can ache by? If inscribe ~ Tumor need not be cancer surely, cent is mixed benignly malign, malignant tumor is general the cancer that we say. General and benign tumor grows very slow, hang in it only turn or can be intense ache when oppressive nerve, lie on one's back can feel by pressure have keenly feel. Tumor is cancer, the symptom should see diagnostic gain. Do not ache surely surely by.