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Updated: May 27, 2026

An Immature Murine Model of Reversible Unilateral Ureteral Obstruction
Published on: April 4, 2025
Hydronephrosis caused by a relapse of granulomatosis with polyangiitis (Wegener's)
Azusa Umemoto1, Hidekazu Ikeuchi, Keiju Hiromura
1Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa, Maebashi, Gunma, 371-8511, Japan.
Abstract:
We describe a case of relapsed granulomatosis with polyangiitis (Wegener's) (GPA) that presented with abdominal pain. (18)F-fluoro-2-deoxy-D: -glucose positron emission tomography (FDG-PET)/computed tomography (CT) clearly depicted an inflammation of the left peri-iliac arterial soft tissue, which was thought to be the cause of the ureteral obstruction and hydronephrosis. Our case shows that peri-iliac arterial inflammation occurs in GPA and causes hydronephrosis. In addition, FDG-PET/CT is a useful tool for management of this systemic inflammatory disease.
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