title: Ewing's sarcoma of the sacrum.
abstract: A lytic lesion with soft-tissue extension in the sacrum of a 47-year-old man was needle-biopsied under computed tomographic (CT) guidance using an 18-gauge cutting needle. The cytologic appearance of the lesion and immunohistochemical staining were diagnostic of Ewing's sarcoma. Specifically, a new marker (O13) for the presence of glycoprotein p30/32 mic2 in Ewing's sarcoma was utilized.
authors: Department of Radiology, Brigham and Women's Hospital, Boston, MA 02115, USA.
authors: N D
authors: ND
authors: Baker
authors: D M
authors: DM
authors: Dorfman
mesh_terms: D000071443:12E7 Antigen; D015703:Antigens, CD / Q000032:analysis; D014408:Biomarkers, Tumor / Q000032:analysis; D001707:Biopsy, Needle; D015815:Cell Adhesion Molecules / Q000032:analysis; D006023:Glycoproteins / Q000032:analysis; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000032:analysis; D015641:Radiography, Interventional; D012447:Sacrum / Q000000981:diagnostic imaging / Q000473:pathology*; D012512:Sarcoma, Ewing / Q000000981:diagnostic imaging / Q000473:pathology*; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed
chemical_list: D000071443:12E7 Antigen; D015703:Antigens, CD; D014408:Biomarkers, Tumor; C061828:CD99 protein, human; D015815:Cell Adhesion Molecules; D006023:Glycoproteins; D009363:Neoplasm Proteins