Estrozi, Bruna [UNESP]Queiroga, Eduardo [UNESP]Bacchi, Carlos E. [UNESP]Faria Soares de Almeida, VirginiaLucas de Carvalho, JoseLageman, Gerritt M.Rosado-de-Christenson, MelissaSuster, Saul2014-05-272014-05-272006-10-01Annals of Diagnostic Pathology, v. 10, n. 5, p. 283-287, 2006.1092-9134http://hdl.handle.net/11449/69121A left paravertebral mass discovered incidentally on routine examination in a 39-year-old woman is described. Computerized tomography studies revealed a 7 × 6 cm, well circumscribed, noncalcified soft tissue mass with lobular borders abutting the left inferior pulmonary vein and descending aorta. It was not possible to determine the exact anatomic location of the mass based on the imaging studies as both peripheral lung tumors and posterior mediastinal lesions may exhibit the imaging findings described here. At thoracotomy, the mass was seen to be well circumscribed, focally attached to the pleura but without involvement of lung parenchyma, and situated in the left posterior mediastinum. On histological examination, the lesion showed the classical features of myxopapillary ependymoma. Immunohistochemical studies confirmed this impression by demonstrating strong positivity of the tumor cells for S-100 protein, glial fibrillary acidic protein, and CD99 and negative staining with other differentiation markers. A review of the literature with a discussion of the histologic and radiologic differential diagnosis of these lesions is presented. © 2006 Elsevier Inc. All rights reserved.283-287engCentral nervous systemMyxopapillary ependymomaTumorCD99 antigenglial fibrillary acidic proteinprotein S 100adultcase reportcentral nervous systemcomputer assisted tomographydescending aortadiagnostic imagingdifferential diagnosisependymomafemalehistopathologyhumanimage analysisimmunohistochemistrymediastinum tumormedical examinationpriority journalpulmonary veinsoft tissue tumorthoracotomyAdultAntigens, CDCell Adhesion MoleculesDiagnosis, DifferentialEpendymomaFemaleGene Expression Regulation, NeoplasticGlial Fibrillary Acidic ProteinHumansMediastinal NeoplasmsS100 ProteinsTomography, X-Ray ComputedArtigo10.1016/j.anndiagpath.2006.03.015Acesso restrito2-s2.0-33748418921