Ewings Sarcoma Wikibooks

Description: Ewing's sarcoma is a malignant tumor that belongs to a broader family of tumors that includes PNET (primitive neuroectodermal tumors). In simple terms, these tumors are all pathologically characterized by the so-called "small round blue cells." Ewing's sarcoma almost always occurs in bone, although other members of the PNET family can occur anywhere. Ewing's is pathologically differentiated from other members of the family on the basis of immunohistochemical staining. Ewing's sarcoma was described by James Ewing in 1920. Similar tumors were reported earlier than this, but it was the work of Ewing which established that the disease was separate from lymphoma or neuroblastoma. Diagnostic Radiology/Musculoskeletal Imaging/Tumors Basic/Ewing sarcoma From Wikibooks, the open-content textbooks collection