title: Idiopathic retroperitoneal fibrosis: an unusual cause of low back pain.
abstract: Retroperitoneal fibrosis (RPF) is a rare inflammatory disease which is characterized by the development of a fibrous process that surrounds the major vessels and organs located within the retroperitoneum. About two thirds of all cases of RPF are idiopathic and are thought to be immunological in origin. Diagnosis of RPF should be considered in patients with unexplained abdominal and low back pain and retroperitoneal lesions. We present a case report of a 59-year-old white male with idiopathic RPF with history of low back pain and weight loss as only symptoms and treated by tamoxifen, corticosteroids, and insertion of JJ endoureteric catheters due to the obstruction of the upper urinary tract.
authors.affiliation: Rheumatology Division, Second Department of Internal Medicine, St. Anne's University Hospital, Masaryk University School of Medicine, Pekarská 53, 65691, Brno, Czech Republic. petr.nemec@fnusa.cz
authors.forename: Petr
authors.initials: P
authors.lastname: Nemec
authors.forename: Sylva
authors.initials: S
authors.lastname: Rybnickova
authors.forename: Pavel
authors.initials: P
authors.lastname: Fabian
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Fojtik
authors.forename: Miroslav
authors.initials: M
authors.lastname: Soucek
mesh_terms: D004965:Estrogen Antagonists / Q000627:therapeutic use; D006801:Humans; D017116:Low Back Pain / Q000209:etiology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012185:Retroperitoneal Fibrosis / Q000150:complications* / Q000188:drug therapy; D013629:Tamoxifen / Q000627:therapeutic use
chemical_list: D004965:Estrogen Antagonists; D013629:Tamoxifen