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Ependymoma Arising from the Pelvis: A Case Report.
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HOME > J Pathol Transl Med > Volume 39(2); 2005 > Article
Case Report Ependymoma Arising from the Pelvis: A Case Report.
Kyungji Lee, Jihan Jung, Youn Soo Lee, Kyo Young Lee, Byung Kee Kim, Chang Suk Kang
Journal of Pathology and Translational Medicine 2005;39(2):120-124
DOI: https://doi.org/
Department of Clinical Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea. lys9908@catholic.ac.kr
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We report here on a case of an ependymoma arising from the pelvis in a 25-year-old woman. She had no evidence of abnormality in her brain and bilateral ovaries. The diagnosis was based on light microscopic, immunohistochemical, and ultrastructural features of a typical ependymoma, including the patterns of pseudorosette or true ependymal rosette, the strong immunopositivity for glial fibrillary acid protein and intermediate filaments, and cilia of tumor cells. The mass was over 20 cm in maximum diameter, and it was located between the uterus and rectum without any connection to bilateral ovaries. There were many metastatic nodules in the pelvis and omentum. In addition, the proliferation index in the most active area was 10% by immunohistochemistry using monoclonal antibody MIB-1. Although the prognosis of the pelvic ependymoma is known to be difficult to evaluate, this case may serve to illustrate the poor prognostic course, according to the size of the tumor, the evidence of metastasis, and the MIB-1 labelling index.


J Pathol Transl Med : Journal of Pathology and Translational Medicine