In a historic medical breakthrough, surgeons from UCLA and USC have successfully performed the world\u2019s first human bladder transplant. The procedure, carried out on May 4, 2025, at Ronald Reagan UCLA Medical Center, marks a major milestone in transplant surgery and offers new hope to patients suffering from severe bladder dysfunction.<\/p>\n\n\n\n
The recipient, 41-year-old Oscar Larrainzar, had lost most of his bladder and both kidneys due to urachal adenocarcinoma, a rare form of bladder cancer. He had been on dialysis for seven years and had extremely limited bladder capacity\u2014just 30 milliliters compared to the average male capacity of over 300.<\/p>\n\n\n\n
\u201cI was a ticking time bomb,\u201d Larrainzar told The New York Times. \u201cBut now I have hope.\u201d<\/p>\n\n\n\n
The surgical team was led by Dr. Nima Nassiri of UCLA and Dr. Inderbir Gill of USC. The doctors spent more than four years developing and refining the techniques necessary to make this transplant possible. They practiced first on pigs, then moved on to human cadavers and brain-dead donors to test their methods.<\/p>\n\n\n\n
The biggest challenge was the bladder\u2019s complex vascular system, which sits deep in the pelvis. To solve this, the surgeons connected the bladder\u2019s right and left arteries (as well as the veins) while the organ was on ice. This meant only two vascular connections had to be made during the actual transplant, simplifying the operation.<\/p>\n\n\n\n
\u201cThis surgery is the realization of a dream,\u201d said Dr. Gill. \u201cWe\u2019ve opened a potential door for patients with debilitating pelvic pain, infections, and bladder failure that didn\u2019t exist before.\u201d<\/p>\n\n\n\n
The team retrieved both a kidney and a bladder from an organ donor and transported them to UCLA. The eight-hour surgery involved attaching both organs inside Larrainzar\u2019s body. The kidney began functioning immediately, producing urine without the need for dialysis.<\/p>\n\n\n\n
In a remarkable twist, just two days after discharge, Larrainzar was able to urinate on his own\u2014something he hadn\u2019t done in seven years.<\/p>\n\n\n\n
\u201cHe peed!\u201d Dr. Nassiri said in disbelief. He quickly called Dr. Gill, who responded, \u201cNo way! What the hell?\u201d<\/p>\n\n\n\n
Dr. Gill later drove to UCLA to witness it for himself. \u201cIt\u2019s the first time he has been able to pee in seven years. For all of us, this is huge,\u201d he said.<\/p>\n\n\n\n
Larrainzar has already shed 20 pounds of fluid weight and reports feeling stronger every day.<\/p>\n\n\n\n
Doctors say Larrainzar was an ideal first patient. His prior kidney and bladder loss, combined with scarring that made traditional bowel-based bladder reconstruction difficult, meant he was already a candidate for immunosuppressive drugs. These drugs are required for all transplant recipients to prevent organ rejection, but they come with serious side effects. Because Larrainzar already needed a kidney transplant, the bladder transplant did not add to his medication burden.<\/p>\n\n\n\n
\u201cThis first attempt at bladder transplantation has been over four years in the making,\u201d said Dr. Nassiri. \u201cFor the appropriately selected patient, it is exciting to be able to offer a new potential option.\u201d<\/p>\n\n\n\n
Until now, the only alternative to a non-functioning bladder involved using intestinal segments to create a urinary reservoir. This method often leads to infections, kidney damage, and digestive problems in up to 80 percent of patients.<\/p>\n\n\n\n
\u201cThis new method avoids introducing bacteria-rich bowel tissue into the urinary system,\u201d Dr. Gill explained. \u201cIt could reduce complications and improve long-term outcomes.\u201d<\/p>\n\n\n\n
Dr. Despoina Daskalaki, a transplant surgeon at Tufts Medical Center, praised the innovation. \u201cThey\u2019re asking: Why do we have to put up with all the complications? Why don\u2019t we try and give this person a new bladder?\u201d<\/p>\n\n\n\n
Still, not everyone is convinced the procedure should become routine. Dr. Rachel Forbes of Vanderbilt University cautioned that unless a patient already needs immunosuppressive therapy, a bladder transplant might not be worth the risk. \u201cYou might be exchanging some complications for others,\u201d she said.<\/p>\n\n\n\n
The transplant team plans to conduct four more surgeries as part of a small clinical trial. If the outcomes are similarly successful, the trial could expand. Millions of people around the world suffer from bladder dysfunction, and if future transplants prove reliable, the technique could transform treatment options.<\/p>\n\n\n\n
\u201cThis surgery is a historic moment in medicine,\u201d said Dr. Gill. \u201cIt stands to impact how we manage carefully selected patients with terminal bladder conditions that are no longer functioning.\u201d<\/p>\n\n\n\n
As for Larrainzar, the success of the operation has given him a new lease on life. Sitting in his hospital gown with his wife by his side, he reflected on the journey.<\/p>\n\n\n\n
\u201cThis is a miracle,\u201d he said. \u201cI didn\u2019t think I\u2019d live to see a day like this.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"
A Groundbreaking Operation in California In a historic medical breakthrough, surgeons from UCLA and USC have successfully performed the world\u2019s first human bladder transplant. The procedure, carried out on May 4, 2025, at Ronald Reagan UCLA Medical Center, marks a major milestone in transplant surgery and offers new hope to patients suffering from severe bladder dysfunction. The recipient, 41-year-old Oscar Larrainzar, had lost most of his bladder and both kidneys due to urachal adenocarcinoma, a rare form of bladder cancer. […]<\/p>\n","protected":false},"author":2,"featured_media":6720,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,6],"tags":[],"class_list":["post-6719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cancer-research","category-conditions"],"_links":{"self":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts\/6719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6719"}],"version-history":[{"count":1,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts\/6719\/revisions"}],"predecessor-version":[{"id":6721,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/posts\/6719\/revisions\/6721"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=\/wp\/v2\/media\/6720"}],"wp:attachment":[{"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/healthnews.zone\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}