Chondroblastoma of the femoral head: curettage without dislocation.

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Abstract

[Indexed for MEDLINE] Conflict of interest statement: Declarations Ethics approval and consent to participate The research had been approved by the Ethics Committee of Children's Hospital affiliated to Chongqing Medical University. Informed consent was obtained from all of their legal guardians. Consent for publication Written informed consent for publishing identification images or other personal or clinical details was obtained from the legal guardians of all participants. Competing interests The authors declare no competing interests. 17. Radiologe. 1998 Jun;38(6):509-22. doi: 10.1007/s001170050386. [Ewing sarcoma. Diagnostic imaging]. [Article in German] Henk CB(1), Grampp S, Wiesbauer P, Zoubek A, Kainberger F, Breitenseher M, Mostbeck GH, Imhof H. Author information: (1)Abteilung Osteologie/MR, NAKH, Universitätsklinik für Radiodiagnostik, Ludwig-Boltzmann-Institut für radiologisch-onkologische Tumordiagnostik, Wien. Ewing's sarcoma is a highly malignant neoplasm of the bone whose origin is still uncertain. A strong relationship exists between Ewing's sarcoma and tumors of neural origin (Ewing family of tumors). Ewing's sarcoma must be distinguished from other round-cell tumors like lymphoma and neuroblastoma and also must be differentiated from osteogenic sarcomas. On plain radiographs, Ewing's sarcoma appears as a lytic or mixed lytic-sclerotic, rarely as predominantly sclerotic lesion with margins Lodwick grade III. It is located primarily in the diaphyseal and metadiaphyseal regions of the long bones of the lower extremities. A large soft tissue tumor is usually present. Magnetic resonance imaging is the imaging modality of choice to evaluate the extent of the primary lesion, to monitor the response to neoadjuvant chemotherapy and to follow up non-resected Ewing's sarcomas. Bone scintigraphy is necessary to detect skeletal metastasis, and 201thallium scanning has been shown to be sensitive in the monitoring of treatment response. Today, computed tomography is not longer used to image the tumor site; however, spiral CT of the lungs plays a central role as a staging and follow-up tool. DOI: 10.1007/s001170050386