Revolutionary Histotripsy Treats Liver Tumors Without Traditional Surgery

On June 16, 2026, a remarkable medical breakthrough was brought to light when Mike Wess, an 82-year-old patient from St. Louis, shared his incredible journey. After battling cancer, Mike found himself facing a second tumor on his liver, emerging six years post a complicated surgical removal of the first. With a renewed sense of hope, he returned to the very surgeon who operated on him previously, Dr. Peter DiPasco at Mercy Hospital, eager to tackle his health challenge once more.

What set this story apart from typical cancer treatments was the introduction of a new, non-invasive procedure known as histotripsy. This cutting-edge technique utilizes concentrated sound waves to target and break down cancerous tissue without the need for incisions, needles, or the heating typically associated with conventional methods. For Mike, this represented not just a treatment option; it represented a transformative approach to cancer care.

A Simple and Painless Procedure

Mike's harrowing experience from his first surgery—an estimated seven-hour operation followed by weeks of intense pain and recovery—was vividly etched in his memory. In stark contrast, his histotripsy experience was astonishingly different. After the procedure, he returned home the very same evening, feeling perfectly fine and devoid of pain.

“It was a lot easier than the first time,” he noted, reflecting on the ease of this latest procedure. Mike humorously remarked how he had initially asked his granddaughter if she wanted to see his incision, only to realize there was none.

The Support of Family

Mike's wife, Lillian, also observed dramatic differences between the two treatments. She recalled how the prior surgery left Mike with a large incision and a host of complications, noting the emotional toll it took on both of them. “It was hard to see the pain he was in,” she expressed. However, with the histotripsy treatment, the next day Mike was functioning normally, simply amazed at how effortlessly he transitioned back to everyday life.

The Science Behind Histotripsy

Dr. DiPasco elaborated on the procedure, explaining that the actual treatment lasts around 35 minutes, although pre-treatment planning is meticulous and time-consuming. This planning phase involves ensuring extreme precision, comparing it to setting up a perfect photographic shot before taking the picture.

During the procedure, instead of the traditional hands-on approach, a specialized treatment arm that doesn't physically touch the patient delivers therapeutic sound waves through a flexible membrane, efficiently destroying the tumor while sparing surrounding healthy tissue. This innovative method raises eyebrows at its significant leap in surgical techniques, providing a snapshot of the revolutionary changes in liver surgery within a very short span.

Trusting the New Technology

Mike initially felt hesitant about the new technology but emphasized his unwavering trust in Dr. DiPasco. With his physician's confidence in the procedure, he decided to move forward, ultimately feeling elated about his decision. “I can’t explain how happy I am with this decision. The other option was major surgery,” Mike shared, expressing his contentment with his experience.

As one of the earliest adopters of this groundbreaking technology in the nation, Mercy Hospital St. Louis continues to be at the forefront of innovative medical care. The addition of histotripsy into their liver cancer treatment program exemplifies their commitment to offering patients advanced and minimally invasive therapeutic options. Excitingly, clinical trials are expanding the research on the efficacy of the histotripsy system for other types of solid tumors, emphasizing Mercy's dedication to pioneering advancements in cancer care.

Mercy is consistently recognized for its patient-centric approach, serving millions through its integrated health care system that spans across five states. With services that include acute care, specialty hospitals, and extensive outpatient services, Mercy demonstrates its commitment to providing quality and accessible care to communities and fostering an environment where cutting-edge treatments like histotripsy can thrive. This remarkable story of Mike Wess and histotripsy highlights not just medical innovation, but also the hope and renewal that come with advancements in health care, especially for cancer patients worldwide.