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Case Rep Oncol Med. 2013;2013:564980. doi: 10.1155/2013/564980. Epub 2013 Jan 15.

Malignant solitary fibrous tumor of the kidney: report of the first case managed with interferon.

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


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.

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