Open pyelolithotomy in incompletely duplicated kidney with contralateral crossed fused ectopia: A rare case report
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Updated: Jan 7, 2026

A Mouse Model to Evaluate the Long-Term Structural and Functional Outcomes after the Reversal of Prolonged Unilateral Ureteric Obstruction
Published on: July 18, 2025
Nouraldin Ibrahim Hih1,2,3, Murad Isaac Mohammad1,3, Mohammed Khaled Najjar1,3
1Faculty of Medicine, Mansoura University, Mansoura, Egypt.
Abstract:
Crossed fused renal ectopia is a rare congenital anomaly that can lead to urinary stasis, infection, and stone formation, although its aberrant anatomy often complicates both endoscopic and percutaneous access and treatment. We report a 68-year-old man presenting with recurrent right flank pain. Imaging revealed left-to-right crossed fused ectopia with a mal-rotated left kidney fused to an incompletely duplicated right kidney. A large stone was detected. The patient underwent an open pyelolithotomy, achieving near-complete clearance. This case highlights the continued role of open surgery in managing large stones in anomalous kidneys when minimally invasive options are unsafe or infeasible.
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