Management of recurrence from a retroperitoneal xanthogranuloma: case report.

Xanthogranulomas from the retroperitoneal space are rare. To our knowledge only a few cases have been reported in the literature in the retroperitoneal space. In this report, the authors present the case of a 24-year-old woman with a recurrence of this rare tumor. Two years after resection, the mass showed rapid local recurrence. Attention should be paid to the possibility of the transformation into a fibroxanthosarcoma, which could have an aggressive clinical course.