Clinical trials Below are current clinical trials.128 studies in Surgery (open studies only). Filter this list of studies by location, status and more. Pituitary tumor registry Rochester, Minn. The purpose of this data registry involves the collection of standard of care clinical treatment regimens, diagnostic information and surgical outcomes which may include human specimens and associated genomewide expression data. A Study To Evaluate The Impact Of Non-invasive Tests For Bladder Cancer Rochester, Minn. Levels of bladder cancer-derived extracellular vesicles become undetectable after radical cystectomy in patients with localized bladder cancer. This study hopes to determine the levels of bladder cancer-derived extracellular vesicles pre- and post-RC. Mayo Clinic Cancer Center Neuro-Oncology Program Registry And Biobank For The Study Of Nervous System Tumors Rochester, Minn. Biospecimen banks are a modern attempt to centralize collections of human blood and tissue samples along with health information and personal history. The Neuro-Oncology Program Registry and Biobank will be used for research purposes to increase our understanding of nervous system tumors. Treatment In Thoracic Aortic Aneurysm: Surgery Vs Surveillance Rochester, Minn. The ascending aorta conducts blood from the heart to the rest of the body. The ascending aorta can become enlarged, and the risk of tearing and rupturing becomes higher with larger aorta. When the ascending aorta tears or ruptures, the risk dying is high even if surgery is done as soon as possible. Traditionally, when the ascending aorta gets above 5.5 cm, surgery is recommended to replace the aorta. However, this threshold is based relatively weak evidence, and sometimes patients with smaller aorta can tear or rupture. On the other hand, surgery carries its own risk as well. Since there are risk of waiting or doing surgery, there is currently no great support for either approach for patients with a smaller aorta. In the TITAN SvS trial, patients with an ascending aorta between 5.0 to 5.5 cm is assigned by chance to the early surgery group, in which they will undergo replacement of aorta, or the surveillance group, in which they will be closely monitored. The chance of dying or suffer tearing or rupture of aorta between the two groups will be compared. The result of the trial will guide future practice for patients with enlarged ascending aorta.This is a prospective, multi-centre randomized control trial that compares the all-cause mortality, aneurysm-related aortic events, rate of stroke, and quality of life for those patients undergoing early elective ascending aortic surgery to those patients undergoing surveillance. Patients referred for an ascending aortic aneurysm that meets the inclusion criteria will be randomized to the early elective surgery group or the surveillance group. Recruitment will end when the desired sample size is reached, and the patients will be followed for a minimum 2-year period. The primary objective of the trial is to compare the composite outcome of the all-cause mortality and incidence of acute aortic events between surveillance and elective ascending aortic surgery for patients with degenerative or bicuspid valve-related ascending aortic aneurysm after 2 years of follow up. The hypothesis is that the early surgery group will have a significantly lower all-cause mortality and incidence of acute aortic events at 2 years of follow up compare to the surveillance group. The result of this trial will provide evidence based guidance in the appropriate management of ascending aortic aneurysm based on the size criteria, and establish a large database for future investigations. Benevolent Tumor Tissue Repository Fighting for the Legacy of our Young Rochester, Minn. The aim of this study is to create a patient and patient-advocate catalyzed tumor bank for the retrieval, processing, analysis, and maintenance of pre-treatment, post-treatment and (when available) post-mortem soft tissue sarcoma (STS) tissue and tissue data with an emphasis on STSs occurring in younger patients (YP-STS). This resource-platform will be named Project BTTRFLY (Benevolent Tumor Tissue Repository Fighting for the Legacy of our Young). A Study To Collect Clinical Outcomes Of Anatomic And Reverse Total Shoulder Arthroplasty Scottsdale/Phoenix, Ariz. The purpose of the study is a multi-center prospective registry to collect clinical outcomes of anatomic and reverse total shoulder arthroplasty. A Study to Evaluate Analgesic Use and Duration for Pediatric Long Bone Fractures Rochester, Minn. The purpose of this study is to develop an evidenced-based guideline for pediatric opioid prescribing guideline from the emergency department for long bone fractures to more closely tailor pain management to abuse potential. A Study to Evaluate Outcomes of Rotator Cuff Repair Rochester, Minn. The purpose of this study is evaluate the outcomes and complications in patients who underwent a rotator cuff repair. A Study to Assess an MRI Image Localizer for 7T MRI Neuronavigation Rochester, Minn. The purpose of this study is to develop a localizer for use within the 7T MRI to allow for future clinical use in neurosurgical planning. A Study of Simulated Sylvian Fissure Dissection Under Subarachnoid Hemorrhage Conditions Using a Rodent Microvascular Anastomosis Model Rochester, Minn. The purpose of this study is to assess the differences in microvascular anastomosis outcomes between the experiment aneurysmal subarachnoid hemorrhage (aSAH)-like conditions and control animals. Pagination Clinical studies PrevPrevious Page Go to page 99 Go to page 1010 Go to page 1111 Go to page 1212 Go to page 1313 NextNext Page Request an appointment Expertise & rankingsResearch April 04, 2026 Share on: FacebookTwitter SurgerySectionsOverviewTests & proceduresConditions treatedDoctorsExpertise & rankingsClinical trialsResearchPatient storiesCosts & insuranceNews from Mayo ClinicReferralsFrozen SectionPathology Lab Research: It's all about patients Show transcript for video Research: It's all about patients [MUSIC PLAYING] Joseph Sirven, M.D., Professor of Neurology, Mayo Clinic: Mayo's mission is about the patient. The patient comes first. So the mission and research here is to advance how we can best help the patient, how to make sure the patient comes first in care. So in many ways, it's a cycle. It can start with as simple as an idea worked on in a laboratory, brought to the patient bedside, and if everything goes right — and let's say it's helpful or beneficial — then brought on as a standard approach. And I think that is one of the unique characteristics of Mayo's approach to research — that patient-centeredness — that really helps to put it in its own spotlight. SectionsRequest an AppointmentOverviewTests & proceduresConditions treatedDoctorsExpertise & rankingsClinical trialsResearchPatient storiesCosts & insuranceNews from Mayo ClinicReferrals ORG-20475391 Medical Departments & Centers Surgery