Gladness Gideon
In a groundbreaking medical advancement, surgeons at the Ronald Reagan UCLA Medical Center have successfully carried out the world’s first full human bladder transplant, marking a significant leap forward in organ transplantation and urological care.
The pioneering procedure, performed on May 4, involved 41-year-old Oscar Larrainzar, a father of four who had previously lost most of his bladder to cancer and later underwent kidney removal due to end-stage renal disease. Larrainzar had been dependent on dialysis for seven years prior to the operation.
In a single, eight-hour surgery, doctors transplanted both a donor kidney and a bladder into Larrainzar. The surgical team first transplanted the kidney, then attached the bladder, using a technique they had refined over years of preparation.
Dr. Nima Nassiri, one of the lead surgeons on the case, described the outcome as “immediate and remarkable.”
“The kidney began functioning instantly, producing a large volume of urine that was successfully directed into the new bladder,” Nassiri said. “There was no need for dialysis following the procedure.”
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Bladder transplants had previously been deemed too complex to undertake due to the intricate vascular network within the pelvis. But after more than four years of preparation, the UCLA team achieved what had never before been attempted successfully.
Dr. Inderbir Gill, who co-led the procedure with Nassiri, noted that prior treatment options for patients needing bladder reconstruction—such as using a segment of the intestines or installing an external urine collection bag—came with considerable health risks and quality-of-life challenges. The transplant could offer a safer, more sustainable alternative.
This historic operation not only offers new hope to individuals with severe bladder conditions but also signals a potential future where complete bladder replacement becomes a viable option in organ transplantation.
UCLA Health officials have described the surgery as a milestone in medicine, one that could transform how urologic and kidney-related diseases are treated worldwide.