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Retroperitoneal fibrosis: retrospective descriptive study on clinical features and management

Authors Laroche AS, Bell RZ, Bezzaoucha S, Földes E, Lamarche C, Vallée M

Received 21 June 2016

Accepted for publication 11 August 2016

Published 26 October 2016 Volume 2016:8 Pages 175—179


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Jan Colli

Ann-Sophie Laroche,1 Robert Z Bell,1 Sarah Bezzaoucha,1 Eva Földes,2 Caroline Lamarche,1 Michel Vallée1

1Section of Nephrology, 2Section of Internal Medicine, Department of Medicine, Maisonneuve-Rosemont Hospital, University of Montreal, Montreal, QC, Canada

Introduction: Retroperitoneal fibrosis (RPF) is a rare condition characterized by the presence of inflammatory and fibrous retroperitoneal tissue that often encases the ureters or abdominal organs. This study describes the clinical characteristics, diagnostic methods, and treatments and their effects on renal function.
Methods: We conducted a retrospective analysis of patients diagnosed with RPF at Maisonneuve-Rosemont Hospital.
Results: We identified 17 patients with RPF between 1998 and 2013. Eight patients were females (47%), and the mean age was 62±18 years. Eleven patients were idiopathic. Back pain was the most common symptom. All diagnoses were made based on the finding of a retroperitoneal mass on the computed tomography scan. Three patients had histological diagnosis of RPF and seven patients had unspecific changes on their biopsy. Twelve patients needed double-J stents, three patients had a temporary percutaneous nephrostomy, two patients had to have a nephrectomy for refractory ureteral obstruction, and one patient required hemodialysis. Ten patients with idiopathic RPF received medical treatment. In the treated group, only two patients had complete remission of the disease and five patients had improvement of their lesions. There were no deteriorations and only one relapse. Seven patients did not receive any treatment; two of them achieved complete remission, one of them deteriorated, and two of them had no changes.
Conclusion: Most of our cases of RPF were idiopathic. Almost all treated patients received prednisone and seemed to respond, at least partially. There was a lot of heterogeneity in patient management, which makes it difficult to compare treatment effects. However, treated patients seemed to have more favorable outcomes than those who were not.

Keywords: retroperitoneal fibrosis, hydronephrosis, renal failure

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