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Srinivas Rao S, Pandey A, Mroueh N, Elias N, Katabathina VS, Kambadakone A. Comprehensive review of imaging in pancreas transplantation: a primer for radiologists. Abdom Radiol (NY) 2024; 49:2428-2448. [PMID: 38900315 DOI: 10.1007/s00261-024-04383-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/06/2024] [Accepted: 05/10/2024] [Indexed: 06/21/2024]
Abstract
Pancreas transplantation is a complex surgical procedure performed to restore normoglycemia in patients with type 1 diabetes and includes whole/segmental organ transplant and islet cell transplantation (ICT). In the United States, simultaneous pancreas-kidney transplant (SPK) is most commonly performed due to the higher occurrence of end-stage renal disease in diabetic patients. Understanding the surgical technique and postoperative anatomy is imperative for effective and accurate surveillance following transplantation. Imaging plays an essential role in patients with pancreatic transplants and is often used to evaluate viability, vascular and parenchymal anatomy, and identify potential complications. Imaging techniques such as ultrasound, color and spectral Doppler, computed tomography (CT), magnetic resonance imaging (MRI), and angiography have a complementary role in the postoperative evaluation following a pancreas transplant. The common complications after a whole organ pancreas transplant include vascular thrombosis, graft rejection, pancreatitis, and infections. Complications can be classified into vascular (partial or complete venous thrombosis, arterial thrombosis, stenosis or pseudoaneurysm), parenchymal (pancreatitis, graft rejection), and bowel-related or miscellaneous causes (bowel obstruction, anastomotic leak, and peripancreatic fluid collections). Islet cell transplantation is an innovative therapy for patients with type 1 diabetes. It involves isolating insulin-producing islet cells from donor pancreas and transplanting into recipients, to provide long-term insulin independence or significantly reduce insulin requirements. In recent years, isolation techniques, immunosuppressive regimens, and post-transplant monitoring advancements have propelled ICT as a viable therapeutic option. This comprehensive review aims to provide insights into the current state-of-the-art imaging techniques discussing both normal and abnormal features following pancreas transplantation.
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Affiliation(s)
- Shravya Srinivas Rao
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White 270, Boston, MA, 02114-2696, USA
| | - Ankur Pandey
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White 270, Boston, MA, 02114-2696, USA
| | - Nayla Mroueh
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White 270, Boston, MA, 02114-2696, USA
- Department of Internal Medicine, Allegheny General Hospital, Pittsburgh, PA, 15212, USA
| | - Nahel Elias
- Department of Surgery, Transplantation Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114-2696, USA
| | - Venkata S Katabathina
- Department of Radiology, University of Texas Health at San Antonio, Floyd Curl Drive, 7703, San Antonio, TX, 78229, USA
| | - Avinash Kambadakone
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White 270, Boston, MA, 02114-2696, USA.
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Mervak BM, Roseland ME, Wasnik AP. Pancreatic Transplantation: Surgical Anatomy and Complications. Radiol Clin North Am 2023; 61:821-831. [PMID: 37495290 DOI: 10.1016/j.rcl.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Pancreatic transplantation is a complex surgical procedure performed for patients with chronic severe diabetes, often performed in combination with renal transplantation. Vascular and exocrine drainage anatomy varies depending on the surgical technique. Radiology plays a critical role in the diagnosis of postoperative complications, requiring an understanding of grayscale/Doppler ultrasound as well as computed tomography and MR imaging. In this review, we detail usual surgical methods and normal postoperative imaging appearances. We then review the most common complications following pancreatic transplants, emphasizing diagnostic features of vascular (arterial/venous), surgical, and diffuse parenchymal pathologic conditions on multiple imaging modalities.
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Affiliation(s)
- Benjamin M Mervak
- Division of Abdominal Radiology, Department of Radiology, University of Michigan-Michigan Medicine, University Hospital, B1D502, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Molly E Roseland
- Division of Abdominal Radiology, Department of Radiology, University of Michigan-Michigan Medicine, University Hospital, B1D502, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA; Division of Nuclear Medicine, Department of Radiology, University of Michigan-Michigan Medicine, University Hospital, B1D502, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Ashish P Wasnik
- Division of Abdominal Radiology, Department of Radiology, University of Michigan-Michigan Medicine, University Hospital, B1D502, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA.
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Voutsinas N, Singh AP, Lewis S, Rosen A. Multi-Modality Imaging Evaluation of the Whole-Organ Pancreas Transplant. Curr Probl Diagn Radiol 2018; 48:289-297. [PMID: 30170772 DOI: 10.1067/j.cpradiol.2018.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 04/17/2018] [Accepted: 05/19/2018] [Indexed: 11/22/2022]
Abstract
Pancreas transplants are an important treatment options for patients with severe diabetes mellitus and other medical conditions. Multiple-imaging modalities, including computed tomography (CT), magnetic resonance imaging (MRI) and ultrasound (US) are available to evaluate the pancreas transplants and their vascular supply, with the graft having a characteristic appearance on each modality. Complications of the graft and its vascular supply present interesting challenges to the clinicians and radiologists caring for this patient population. Being able to identify the imaging appearance of normal and abnormal pancreas transplants, it is necessary to ensure these patients are provided optimal care.
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Affiliation(s)
- Nicholas Voutsinas
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY.
| | - Ayushi P Singh
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Sara Lewis
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY; Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Ally Rosen
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY
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