Brain cancer and other nervous system cancers have a 33.4% five-year survival rate. In adults, brain tumors rarely begin in the brain — when they do, they're known as primary brain cancers.

For 3 out of every hundred people with cancer, the primary site of cancer isn't found. When this is the case, the tumor is usually referred to as a metastatic cancer of unknown primary origin. With ...

Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 435 Skirkanich Hall, Philadelphia, Pennsylvania 19104, United States ...

The word tumor is an umbrella term for a cancerous mass, which means an uncontrolled replication or growth of cells, says Dr. Joseph Tsang, D.V.M. and senior veterinarian at Small Door Veterinary.

This was the site of an injury he sustained five months earlier while removing a patient's malignant abdominal tumor. The lump in the surgeon's hand measured 1.2 inches (3 centimeters) in diameter.

Indeed there was a small tumor in Timchak's pancreas, but it turned out to be one that could be removed surgically. "The reason this is so different is it has a much slower growth rate and doesn't ...