how do you know that a simple lump is already a tumor?

An abnormal growth of tissue resulting from uncontrolled,progressive multiplication of cells and serving no physillogical function is termed as tumer. Doctors divide the tumers in to brnign and malignant based on microscopic examinations. If the tumer is benign, the growth is slow and is harmless. Generally such growth can be easily cured and can bepermanently removed. But if malignant the growhth is faster and spreadsthrough out the body. It recur if removed. If such a growth is detected, better to go to a Doctorimmediately. For more infornation Please visit http://www.answers.com/topic/tumor