A<unk>  is a malignant tumor, a type of cancer that arises from transformed cells of mesenchymal (connective tissue) origin. Connective tissue is a broad term that includes bone, cartilage, fat, vascular, or hematopoietic tissues, and<unk> s can arise in any of these types of tissues. As a result, there are many subtypes of<unk> , which are classified based on the specific tissue and type of cell from which the tumor originates.<unk> s are primary connective tissue tumors, meaning that they arise in connective tissues. This is in contrast to secondary (or "metastatic") connective tissue tumors, which occur when a cancer from elsewhere in the body (such as the lungs, breast tissue or prostate) spreads to the connective tissue. The word<unk>  is derived from the Greek σάρκωμα sarkōma "fleshy excrescence or substance", itself from σάρξ sarx meaning "flesh".
Sarcoma
Angiosarcoma
Soft-tissue sarcoma
Hemangiosarcoma
Xanthoma
Myosarcoma
Epithelioma
Liposarcoma