A Potential Link: Cross-fused Renal Ectopia With Concomitant Absent Left Testicle

Area of Science:

• Urology
• Congenital Anomalies
• Medical Case Reports

Background:

• Cross-fused renal ectopia (CFRE) is a rare congenital anomaly where both kidneys are situated on one side of the retroperitoneal space.
• CFRE often goes undiagnosed until incidental radiologic screening or investigation of other genitourinary issues.
• This condition is frequently associated with other congenital and genetic disorders, occurring in over 50% of cases.

Purpose of the Study:

• To report a unique case of cross-fused renal ectopia.
• To highlight the rare co-occurrence of CFRE with a solitary testicle and an obstructing distal calculus.
• To contribute to the literature on the spectrum of congenital genitourinary anomalies.

Main Methods:

• Case presentation of a 30-year-old male patient.
• Review of patient's medical history and diagnostic imaging findings.
• Literature search for similar reported cases.

Main Results:

• The patient presented with left-to-right cross-fused renal ectopia.
• A concomitant absent left testicle was noted.
• An obstructing distal calculus was identified in the fused renal system.

Conclusions:

• This case represents the first reported instance of cross-fused renal ectopia associated with a solitary testicle.
• The findings underscore the importance of comprehensive genitourinary evaluation in patients with congenital anomalies.
• Further research may be warranted to explore potential genetic or developmental links between these conditions.