Pelviureteric junction obstruction of the ipsilateral kidney caused by hydronephrosis secondary to crossed fused renal ectopia. Issue 5 (1st June 2022)

• Record Type: Journal Article
• Authors: Kato, Taiki; Aoki, Maria; Torii, Koei; Hamakawa, Takashi; Nishio, Hidenori; Mizuno, Kentaro; Ikegami, Yosuke; Maruyama, Tetsuji; Hayashi, Yutaro; Yasui, Takahiro
• Is Part Of: IJU case reports. Volume 5:Issue 5(2022)
• Page Start: 354
• Page End: 357
• Publication Date: 2022-06-01
• Subjects: congenital abnormalities -- fused kidney -- hydronephrosis -- kidney -- ureteral obstruction; Urology -- Periodicals; Genitourinary organs -- Periodicals; Electronic journals; Periodicals; 616.6
• DOI: 10.1002/iju5.12487
• Languages: English
• ISSNs: 2577-171X

Abstract

Abstract : Introduction: Crossed fused renal ectopia is rare and usually asymptomatic. However, it is associated with urological anomalies. Case presentation: A 15‐year‐old Japanese boy was transported to our hospital with right abdominal pain and hematuria after a soccer ball hit his right abdomen. Computed tomography revealed right hydronephrosis beyond the center of the body and no left kidney. Percutaneous nephrostomy was performed immediately, and a pyeloplasty was scheduled for 5 months later. Right hydronephrosis was noted to have been caused by left pelvic expansion due to a crossed fused ectopic kidney (secondary to a left pelviureteric junction obstruction). Subsequently, a left dismembered pyeloplasty was performed. Twenty‐four months later, pain and hematuria were absent, and the creatinine level was 1.1 mg/dL. Ultrasonography revealed a shrunken right kidney. Conclusion: We encountered a unique urological anomaly with crossed fused renal ectopia. Comprehensive anatomical evaluation before surgery is important for maintaining long‐term renal function.