Definition

neuplasia means new growth, new growth means neoplasm
To become neoplastic, a normal cell must develop mutations that allow it to no longer obey boundaries of adjacent cells, thus allowing for uncontrolled growth, and the neoplasm must be able to produce its own blood supply. If the neoplasm is malignant, the cells must also gain the ability to invade the basement membrane and surrounding tissue, enter the blood stream, and spread to and grow within distant organs.

classification

1.Epithelial tumor
2.Messenchymal
3.Mixed
4.totipotential cell
5.blood cell tumor
6.Embryogenic
7.Embryonic

Examples

.Papillomas
.Polyps
.Meningioma