A sarcoma is a cancer that arises from transformed cells of mesenchymal (connective tissue) origin.[1][2] Connective tissue is a broad term that includes bone, cartilage, fat, vascular, or hematopoietic tissues, and sarcomas can arise in any of these types of tissues.[2][3] As a result, there are many subtypes of sarcoma, which are classified based on the specific tissue and type of cell from which the tumor originates.[4] It is important to note that sarcomas are primary connective tissue tumors, meaning that they arise in connective tissues.[2] 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.[5] The word sarcoma is derived from the Greek σάρξ sarx meaning "flesh".[6]
Sarcomas are typically divided into two major groups: bone sarcomas and soft tissue sarcomas,[2] each of which has multiple subtypes. In the United States, the American Joint Committee on Cancer (AJCC) publishes guidelines that classify the subtypes of sarcoma.[4] These subtypes are as follows:
Subtypes of bone sarcoma:
Osteosarcoma
Chondrosarcoma
Poorly differentiated round/spindle cell tumors (includes Ewing sarcoma)
Hemangioendothelioma
Angiosarcoma
Fibrosarcoma/myofibrosarcoma
Chordoma
Adamantinoma
Other:
Liposarcoma
Leiomyosarcoma
Malignant peripheral nerve sheath tumor
Rhabdomyosarcoma
Synovial sarcoma
Malignant solitary fibrous tumor.[4]
Subtypes of soft tissue sarcoma:
Liposarcoma (includes the following varieties: well-differentiated, not otherwise specified, de-differentiated, myxoid/round cell, and pleomorphic)
Atypical lipomatous tumor
Dermatofibrosarcoma protuberans (includes fibrosarcomatous and pigmented varieties)
Malignant solitary fibrous tumor
Inflammatory myofibroblastic tumor
Low-grade myofibroblastic sarcoma
Fibrosarcoma (includes adult and sclerosing epithelioid varieties)
Myxofibrosarcoma (formerly myxoid malignant fibrous histiocytoma)
Low-grade fibromyxoid sarcoma
Giant cell tumor of soft tissues
Leiomyosarcoma
Malignant glomus tumor
Rhabdomyosarcoma (includes the following varieties: embryonal, alveolar, pleomorphic, and spindle cell/sclerosing)
Hemangioendothelioma (includes the following varieties: retiform, pseudomyogenic, and epithelioid)
Angiosarcoma of soft tissue
Extraskeletal osteosarcoma
Gastrointestinal stromal tumor, malignant (GIST)
Malignant peripheral nerve sheath tumor (includes epithelioid variety)
Malignant Triton tumor
Malignant granular cell tumor
Malignant ossifying fibromyxoid tumor
YOU ARE READING
My Little Moon Child
FanfictionBOOK 2 COMEING SOON Luna-Bella, Beautiful Moon or Moon Beauty. Luna-Bella Lovegood right? Nope Luna-Bella Riddles... *Warning extreme Druna* Luna is haunted by her past... she has secrets and hides them with smiles she has tears and hides them with...