title: Imaging findings in paraspinal extra osseous Ewing sarcoma.
abstract: We present a case of extraskeletal Ewing sarcoma (ES) in a 32-year-old male patient. The patient reported a painful mass in the thoracic paraspinal area which reached a considerable size in a one-month interval. Sonography and CT showed a heterogeneous, hypoechoic/hypodense soft tissue mass embedded in the dorsal paraspinal musculature. MRI with contrast enhancement showed a solid tumor surrounding areas of necrosis/cystic degeneration. Despite wide contact with the spine and ribs there was no intrathoracic/intraspinal extension or neural foraminal invasion. The imaging findings are non specific; a paravertebral location in the appropriate age group may be the clue to the diagnosis of extraskeletal ES.
authors.affiliation: Department of Radiology, General Hospital of Kerkyra, Greece.
authors.forename: E
authors.initials: E
authors.lastname: Perouli
authors.forename: H
authors.initials: H
authors.lastname: Chrysikopoulos
authors.forename: A
authors.initials: A
authors.lastname: Vlachos
authors.forename: A
authors.initials: A
authors.lastname: Koskinas
authors.forename: A
authors.initials: A
authors.lastname: Batistatou
authors.forename: K
authors.initials: K
authors.lastname: Polyzoidis
mesh_terms: D000071443:12E7 Antigen; D000328:Adult; D015703:Antigens, CD / Q000032:analysis; D001706:Biopsy; D015815:Cell Adhesion Molecules / Q000032:analysis; D003952:Diagnostic Imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012512:Sarcoma, Ewing / Q000175:diagnosis*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*; D013904:Thoracic Vertebrae / Q000473:pathology*; D014057:Tomography, X-Ray Computed
chemical_list: D000071443:12E7 Antigen; D015703:Antigens, CD; C061828:CD99 protein, human; D015815:Cell Adhesion Molecules