Neoplasia means “new growth,” and the new growth is called a neoplasm.
“A neoplasm is an abnormal mass of tissue, the growth of which exceeds and is uncoordinated with that of the normal tissues and persists in the same excessive manner even after cessation of the stimuli which evoked the change.”
Benign tumors are innocent tumors that remain localized, have relatively innocent gross and microscopic characteristics and are generally amenable to local surgical removal