Osteoma vs. Osteosarcoma — What's the Difference?

An osteoma (plural: "osteomata") is a new piece of bone usually growing on another piece of bone, typically the skull. It is a benign tumor.

An osteosarcoma (OS) or osteogenic sarcoma (OGS) (or simply bone cancer) is a cancerous tumor in a bone. Specifically, it is an aggressive malignant neoplasm that arises from primitive transformed cells of mesenchymal origin (and thus a sarcoma) and that exhibits osteoblastic differentiation and produces malignant osteoid.Osteosarcoma is the most common histological form of primary bone sarcoma.

A benign tumor composed of bony tissue, often developing on the skull.

A malignant bone tumor. Also called osteogenic sarcoma.

A benign bony tumour that typically grows on the skull.

A type of cancer of the bone.

A tumor composed mainly of bone; a tumor of a bone.

A tumor having the structure of a sarcoma in which there is a deposit of bone; sarcoma connected with bone.

A slow growing benign tumor of consisting of bone tissue; usually on the skull or mandible

Malignant bone tumor; most common in children and young adults where it tends to affect the femur