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Case Reports in Oncological Medicine
Volume 2013, Article ID 564980, 6 pages
Case Report

Malignant Solitary Fibrous Tumor of the Kidney: Report of the First Case Managed with Interferon

1Clinical Oncology Group, Cancerology National Institute, E.S.E., Bogota, Colombia
2El Bosque University, Bogota, Colombia

Received 10 November 2012; Accepted 9 December 2012

Academic Editors: J. M. Buchanich, D. V. Jones, and D. Yin

Copyright © 2013 Javier Cuello and Ricardo Brugés. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Solitary fibrous tumors of the kidney are extremely rare tumors with unpredictable behavior. We describe a case of a patient with a solitary fibrous tumor of kidney with malignant findings with distant metastasis and nephrectomy managed with subcutaneous interferon achieving 23 months of progression-free survival. To date there is no prospective evaluation of any specific modality of treatment, but the surgical management and long-term followup are the only ones so far recommended strategies in the management of these patients. Studies are awaited with more patients to evaluate the different strategies of systemic therapy reported so far to allow adding survival benefit.