👉 Sarcomas are a type of tumor that arises from the cells of the myeloid system, which is responsible for providing the body with its blood and immune systems. They can be benign or malignant. The most common types include medullary sarcomas (also known as embryonal sarcomas) and neuroendocrine sarcomas. Sarcomas are characterized by a proliferation of myeloid cells, which is the type of cell that makes up the blood and immune