It is also called, primitive neuroectodermal tumor, Askin tumor (Ewing sarcoma of the chest wall), extraosseous
Ewing sarcoma (Ewing sarcoma in tissue other than bone).
It is now generally accepted that Ewing sarcoma of bone, extraosseous
Ewing sarcoma, PNET, and Askin tumor (PNET of the thoracopulmonary region) are histologic variants of the same tumor spectrum.
10,9] Damage to distal tibial extraosseous
blood supply provided by branches at anterior and posterior tibial arteries was least with MIPO technique.
Pathologic features of extraosseous
Ewing's sarcoma: a report from the intergroup rhabdomyosarcoma study.
Cement injection is continuously monitored under fluoroscopy to assess the spread of the cement and extraosseous
Osteomas can develop as peripheral (periosteal) masses attached to the cortical plates or as central lesions arising from endosteal bone surfaces whereas the extraosseous
form develops in muscular tissue structures.
The typical presentation of UA is like benign odontogenic cyst while PA presents as an extraosseous
This condition is more common in men than in women; often accompanied by hepatomegaly, lymphadenopathy, extraosseous
lesions, renal failure, and amyloidosis; and has a poorer prognosis than other multiple myeloma isotypes with a median survival time of 13-21 months (4).
The vast majority of cases are intraosseous, and approximately 6% of them arise in extraosseous
and intraosseous arterial anatomy of the adult elbow.
Rath, "Primary spinal epidural extraosseous
Ewing's sarcoma: report of five cases and literature review," Australasian Radiology, vol.
Over 40% of cases had evidence of extraosseous
involvement on MRI, among which four cases were radiographically occult.