This slideshow covers the basics of thyroid goitersâan enlargement of the thyroid gland. Some goiters can become so large that you can easily see them when you turn to the side. But are they typically benign? And who gets goiters, and how do you treat them?
Malignant Melanoma. Definition. Malignant melanoma is a type of cancer arising from the melanocyte cells of the skin. Melanocytes are cells in the skin that produce a pigment called melanin. Malignant melanoma develops when the melanocytes no longer respond to normal control mechanisms of cellular growth.
malignant For something that's very harmful, especially a tumor that's cancerous, use the term malignant. Malignant and its opposite benign are medical terms used to describe a tumor or growth as either cancerous or not respectively. The gn part of both words comes from the Latin word for born, differing in the prefix mal evil and bene kind. A malignant tumor grows uncontrollably and spreads to other parts of the body. Though less common, malignant can also be used to mean evil, malicious like when someone has a malignant imagination.