PMC8107049_01
A, Pre-operative plain X-ray with upward migration of ureteral catheter; B, a computerized tomography scan shows the distal end of the ureteric catheter (arrow) placed in the ureter above the bladder (star).
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Plain X-ray and computed tomography of the abdomen demonstrated that the distal part of the ureteric catheter had migrated upward into the right ureter, and the tip of the catheter had been placed in the renal pelvis (Figure 1A and B).
A, Anesthetic care and positioning for supine percutaneous nephroscopic surgery in the Galdakao-modified supine Valdivia position; B, nephroscopic picture during the retrieval of the ureteric catheter; C, photograph shows the removed ureteric catheter.
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To optimize patient position in association with anesthesia and simultaneous performance of retrograde surgery, the child was placed in the Galdakao-modified supine Valdivia (GMSV) position (Figure 2A), by using a small pillow below the ipsilateral flank to place him in the supine position. The migrated ureteric catheter was caught and retrieved with a 4Fr rigid forceps (Figure 2B and C).
Post-operative plain X-ray with percutaneous nephrostomy and double J stent insertion.
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Finally, a 10.3F loop nephrostomy catheter was left in the renal pelvis (Figure 3) and a 8Fr Foley catheter was inserted for complete diversion of urine.