An abnormal growth or tumor that can spread uncontrollably and in some cases prove fatal, as opposed to a benign growth.
A tumor made up of cancerous cells. The cells of the tumor may either invade other tissues immediately surrounding the site of the tumor or break away and metastasize to other parts of the body.
Mass of cells that invades and destroys healthy.
An atypical overgrowth of cells that has the potential to metastasize and invade other locations within the body.
A tumor that infiltrates and erodes the nearby tissues, can create metastases in other parts of the body, and has a high likelihood of returning after it has been removed.