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A sarcoma is a malignant tumor, a type of cancer that arises from cells of mesenchymal (connective tissue) origin. [1] [2] Connective tissue is a broad term that includes bone, cartilage, muscle, fat, vascular, or other structural tissues, and sarcomas can arise in any of these types of tissues.
It is a sarcoma arising from the lining of blood vessels; that is, blood-filled channels and spaces are commonly observed microscopically. A frequent cause of death is the rupturing of this tumor, causing the patient to rapidly bleed to death. The term "angiosarcoma", when used without a modifier, usually refers to hemangiosarcoma. [2]
Chondrosarcoma is a bone sarcoma, a primary cancer composed of cells derived from transformed cells that produce cartilage. [1] A chondrosarcoma is a member of a category of tumors of bone and soft tissue known as sarcomas. About 30% of bone sarcomas are chondrosarcomas. [2] It is resistant to chemotherapy and radiotherapy. Unlike other primary ...
Spindle cell sarcoma is a type of connective tissue cancer. The tumors generally begin in layers of connective tissue , as found under the skin, between muscles, and surrounding organs, and will generally start as a small, inflamed lump, which grows in size.
Kaposi's sarcoma (KS) is a type of cancer that can form masses on the skin, in lymph nodes, in the mouth, or in other organs. [ 4 ] [ 6 ] The skin lesions are usually painless, purple and may be flat or raised.
Ewing sarcoma is a type of pediatric cancer [5] that forms in bone or soft tissue. [1] Symptoms may include swelling and pain at the site of the tumor, fever , and a bone fracture . [ 2 ] The most common areas where it begins are the legs, pelvis , and chest wall. [ 4 ]
These less surgically assessible tumors tend to recur repeatedly and ultimately may cause death due to their injurious effects on vital organs. While ALT/WDL tumors have very little potential to metastasize , about 10% will convert to an overtly malignant and potentially metastasizing liposarcoma form, dedifferentiated liposarcoma.
Kaposi sarcoma often occurs in patients with acquired immune deficiency syndrome. Kaposi sarcoma, however, has different characteristics from typical soft-tissue sarcomas and is treated differently. [8] In a very small fraction of cases, sarcoma may be related to a rare inherited genetic alteration of the TP53 gene and is known as Li-Fraumeni ...