Retroperitoneal Fibrosis after Chemotherapy Ambrogio Fassina, Rafael Boscolo Berto, Rafi El Mazloum, Fedra Gottardo, Walter Artibani  European Urology  Volume 51, Issue 1, Pages 270-272 (January 2007) DOI: 10.1016/j.eururo.2006.03.013 Copyright © 2006 European Association of Urology Terms and Conditions

Fig. 1 Computed tomography-guided percutaneous fine-needle aspiration sampling of the retroperitoneal mass. The biopsy was performed on the left side, corresponding to the nonfunctional kidney, to reduce the risk of iatrogenic complications. European Urology 2007 51, 270-272DOI: (10.1016/j.eururo.2006.03.013) Copyright © 2006 European Association of Urology Terms and Conditions

Fig. 2 (A) Cytopathology: collagen bundles with few fibroblasts, neutrophils and macrophages (rapid Giemsa, ×20). (B) Histopathology: fibrous tissue composed of dense collagen bundles with few fibroblasts, neutrophils and macrophages (hematoxylin and eosin, ×10). European Urology 2007 51, 270-272DOI: (10.1016/j.eururo.2006.03.013) Copyright © 2006 European Association of Urology Terms and Conditions