What is meant by the behaviour of a tumour?
There are 4 types of behaviour: Benign: this is usually a slow-growing tumour that may displace but does not invade or infiltrate surrounding tissues; a tumour considered not to have malignant or invasive potential. In-situ: an in-situ tumour is one with malignant potential which has remained confined to the tissue in which it originated. Invasive (also known as Malignant): an invasive tumour is one that is not (or is no longer) confined to the tissue in which it originated. Most tumours are invasive. Uncertain: an uncertain tumour is one which, at the time of diagnosis, cannot be classified as either benign or malignant.
