An organ or organ-system abnormality that consists of uncontrolled autonomous cell-proliferation which can occur in any part of the body as a benign or malignant neoplasm (tumor).
Comment:
The World Health Organization (WHO) classifies neoplasms into four main groups: (i) benign neoplasm, (ii) in situ neoplasm, (iii) malignant neoplasm, and (iv) neoplasm of uncertain or unknown behavior. A malignant neoplasm is also known as cancer.