malignancy

https://doi.org/10.1351/goldbook.15863
Population of cells showing both uncontrolled growth and a tendency to invade and destroy other tissues.
Note: A malignancy is life-threatening.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1254 [Terms] [Paper]