About

Joshua Lorenz is an Assistant Professor of Radiation and Cellular Oncology at the Biological Sciences Division of the University of Chicago. His clinical interests include breast cancer, gastrointestinal cancers, head and neck cancer, and lung cancer. He is affiliated with UChicago Medicine and the Pritzker School of Medicine. Further information about his research network profile and contact details are available through the university's channels.

Research topics

• Medicine
• Radiology
• Nuclear medicine
• Internal medicine
• Surgery

Selected publications

• Abstract No. 523 Transhepatic Access Closure for Islet Cell Transplant in Anticoagulated Patients: A Comparison of Microfibrillar Collagen Paste, Coils, and Coil Plus Gelfoam

  Journal of Vascular and Interventional Radiology · 2026-03-23

  article
  PublisherDOI

• Occult Hepatic Artery Infusion Pump Anastomosis Leak Treated with Stent

  Journal of Vascular and Interventional Radiology · 2026-04-02

  article
  PublisherDOI

• Abstract No. 28 Angiographic Embolization for Treatment of Thoracic Wall Hemorrhage: A Single Institution Study

  Journal of Vascular and Interventional Radiology · 2026-03-23

  articleSenior author
  PublisherDOI

• Interventional Radiology Management of the Acute Trauma Patient

  Digestive Disease Interventions · 2025-05-02

  articleSenior author

  Abstract The management of traumatic injuries requires the coordinated efforts of a multidisciplinary team of trauma surgeons, subsurgical specialties, intensivists, and interventionalists. The interventional radiologist plays a critical role in the management of acute trauma by offering 24-hour consultation, expert imaging interpretation, and an array of life-saving minimally invasive procedures. As integrated members of the multidisciplinary clinical team, the interventional radiologist should be able to review clinical information, communicate clearly with consulting services, perform timely intervention, provide postprocedural follow-up, and document relevant information in the patient chart. The following review provides a stepwise approach to the rapid clinical assessment of the trauma patient and outlines the pathways taken by the trauma patient to the interventional radiology suite.

  PublisherDOI

• Transhepatic access closure for islet cell transplant in anticoagulated patients: a comparison of microfibrillar collagen paste, coils, and coil plus gel foam

  CVIR Endovascular · 2025-12-09

  articleOpen access

  PURPOSE: To evaluate the safety and effectiveness of microfibrillar collagen paste (MCP), coils, and coils combined with gelatin sponge for transhepatic access tract embolization following portal vein islet cell transplant. METHODS: A retrospective review was conducted at a single institution between January 2008 and October 2024, including 20, 28, and 21 consecutive islet cell transplant procedures requiring transhepatic access embolization with MCP, coils, and coil plus gelatin sponge, respectively. All procedures were performed via a right portal vein branch. MCP was performed using Avitene (BD). The average number of coils required in the coil plus gelatin sponge and coil-only groups were 1.8 and 1.6 coils per procedure, respectively. All patients were placed on therapeutic anticoagulation during the procedure and for at least two weeks post-transplant. Medical records were reviewed to compare laboratory results, portal venous pressures, post-procedure liver ultrasounds, and 30-day hemorrhagic events across the three groups. RESULTS: All procedures were technically successful. However, one instance of coil migration into a portal vein branch occurred in the coil plus gelatin sponge group (1/28, 3.5%). Baseline hemoglobin, platelet counts, and partial thromboplastin time did not differ significantly between groups (p > 0.05). A statistically significant lower international normalized ratio (INR) was observed in the MCP group compared to the gelatin sponge and coil-only groups (1.0 vs. 1.1 vs. 1.1, p = 0.0036 and 0.004). No statistically significant differences were found in hemoglobin changes, post-transplant portal venous pressures, or post-embolization hemorrhagic events (p > 0.05). One patient in the coil plus gelatin sponge group developed a large subcapsular hematoma (1/27, 3.7%), while another in the MCP group experienced a large right hemothorax (1/20, 5.0%). CONCLUSION: MCP, coils, and coil plus gelatin sponge are similarly effective for transhepatic access closure following islet cell transplant in anticoagulated patients. However, coil embolization may require multiple coils and carries a risk of migration.

  PublisherOA PDFDOI

• TIPS Revision: Indications, Techniques, and What to Consider When Revision Fails

  Techniques in vascular and interventional radiology · 2025-10-04

  articleOpen access

  To review the current indications, surveillance strategies, and technical approaches for transjugular intrahepatic portosystemic shunt (TIPS) revision, with emphasis on ultrasound surveillance limitations, surveillance models, and management of refractory complications, including novel approaches such as parallel TIPS. Comprehensive review of current literature on TIPS revision procedures, surveillance protocols, and management of TIPS-related complications. TIPS dysfunction occurs in 10%-20% of patients within the first year despite covered stent technology. Ultrasound surveillance remains the cornerstone of monitoring but has significant limitations. Novel approaches including parallel TIPS placement and advanced management strategies for refractory ascites show promising results. TIPS revision requires careful patient selection, optimized surveillance protocols, and advanced technical expertise. Emerging technologies and treatment paradigms continue to evolve, improving outcomes for patients with complex portal hypertensive complications.

  PublisherOA PDFDOI

• Endovascular Management of Noncirrhotic Acute Portomesenteric Venous Thrombosis

  Journal of Vascular and Interventional Radiology · 2024-10-09 · 4 citations

  review1st authorCorresponding
  PublisherDOI

• Dispelling the Myths of Percutaneous Catheter Drainage of Infected Abdominal Collections

  Seminars in Interventional Radiology · 2024-10-01

  reviewOpen access1st authorCorresponding

  When consulted for percutaneous catheter drainage (PCD) of abdominopelvic collections, interventional radiologists (IRs) should consider the appropriateness of this technique in the context of other options such as conservative, endoscopic, or surgical management. Whenever possible, published data should be considered prior to performing percutaneous drainage, especially as regards controversial scenarios such as the use of fibrinolytic therapy, the primary placement of large-bore drainage catheters, the drainage of cystic tumors, the drainage of splenic abscesses, and the treatment of collections lacking an in-line drainage window. This article examines past and present published data on PCD to dispel some common myths and guide IRs toward the best applications of PCD.

  PublisherOA PDFDOI

• Endovascular Retrieval of a Damaged Transjugular Intrahepatic Portosystemic Shunt Stent Graft

  Journal of Vascular and Interventional Radiology · 2024-02-26 · 1 citations

  letterOpen access
  PublisherOA PDFDOI

• Direct intrahepatic portocaval shunt compressing the bile duct: a rare case of jaundice

  Gastrointestinal Endoscopy · 2023-11-22

  article
  PublisherDOI

Frequent coauthors

• Brian Funaki

  University of Chicago Medical Center

  59 shared

• Baljendra Kapoor

  University of Michigan–Ann Arbor

  26 shared

• Jeffrey A. Leef

  23 shared

• Rakesh Navuluri

  University of Chicago

  19 shared

• Thuong Van Ha

  University of Chicago Medical Center

  18 shared

• Steven Zangan

  University of Chicago

  17 shared

• Giovanni Mauri

  European Institute of Oncology

  16 shared

• Eric J. Hohenwalter

  Medical College of Wisconsin

  15 shared

Labs

• Radiation and Cellular Oncology, University of ChicagoPI