Ewing sarcoma


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Related to Ewing sarcoma: osteosarcoma

Ew·ing tu·mor

(yū'ing),
a malignant neoplasm which occurs usually before the age of 20 years, about twice as frequently in males, and in about 75% of patients involves bones of the extremities, including the shoulder girdle, with a predilection for the metaphysis; histologically, there are conspicuous foci of necrosis in association with irregular masses of small, regular, rounded, or ovoid cells (2-3 times the diameter of erythrocytes), with very scanty cytoplasm.

Ewing sarcoma

Primitive neuroectodermal tumor, PNET Oncology A primitive neuroectodermal tumor, which primarily affects the midshaft of long bones, which is closely related–if not biologically identical to peripheral neuroepitheliomas Clinical Locoregional bone pain, or pathologic fractures Treatment Excision, RT; few respond to chemotherapy. See Peripheral neuroepithelioma.

Ew·ing tu·mor

(yū'ing tū'mŏr)
A malignant neoplasm that occurs usually before the age of 20 years, about twice as frequently in males, and in about 75% of patients involves bones of the extremities, including the shoulder girdle, with a predilection for the metaphysis; histologically, there are conspicuous foci of necrosis in association with irregular masses of small, regular, rounded, or ovoid cells (2-3 times the diameter of erythrocytes), with very scanty cytoplasm.
Synonym(s): endothelial myeloma, Ewing sarcoma.

Ewing,

James, U.S. pathologist, 1866-1943.
Ewing sarcoma - Synonym(s): Ewing tumor
Ewing tumor - a malignant neoplasm that involves bones of the extremities, including the shoulder girdle, with a predilection for the metaphysis. Synonym(s): endothelial myeloma; Ewing sarcoma
References in periodicals archive ?
Histopathological examination of primary renal Ewing sarcoma. The EWS-FLI1 fusion gene consistent with t(11;22) demonstrated by fluorescence in situ hybridization study.
Massive pleural effusion in an 18-year-old girl with Ewing sarcoma. Can Respir J 2004 Jul-Aug;11(5):363-365.
'We found dramatic early chromosomal shattering in 42 per cent of Ewing sarcomas, not only fusing two critical genes together, but also disrupting a number of important areas,' he added.
Because of its rarity - the incidence of Ewing sarcoma in the United States is about 350 cases per year, Mason says - the disease doesn't generate nearly as much financial support as some of the more "popular" cancers.
1C margins are characteristic of aggressive tumors such as Ewing sarcoma (Figure 4) or osteosarcoma, but can also be seen in osteomyelitis.
Ewing sarcoma is a small round cell malignant neoplasm, considered to be of neuroectodermal derivation.
Cancers that peak in incidence during adolescence include osteosarcoma, Ewing sarcoma, gonadal germ cell tumors and Hodgkin lymphoma.
Butcher, 27, died Thursday from a rare form of bone cancer called Ewing Sarcoma, after which a letter that she had written before her death, was uploaded to her Facebook page.
The incidence of malignancy in children has been documented at 4 to 5 cases per million for osteosarcoma and 3 per million for Ewing sarcoma and primitive neuroectodermal tumor (PNET).