Renal Lesions in Autoimmune Pancreatitis: Diffusion Weighted Magnetic Resonance Imaging for Assessing Response to Corticosteroid Therapy

Atif Zaheer; Vivek Gowdra Halappa; Venkata S Akshintala; Vikesh K Singh; Ihab R Kamel

doi:10.6092/1590-8577/1400

Atif Zaheer Russell H Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions. Baltimore, MD, USA
Vivek Gowdra Halappa Russell H Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions. Baltimore, MD, USA
Venkata S Akshintala Pancreatitis Center, Division of Gastroenterology, Department of Medicine; Johns Hopkins Medical Institutions. Baltimore, MD, USA
Vikesh K Singh Pancreatitis Center, Division of Gastroenterology, Department of Medicine; Johns Hopkins Medical Institutions. Baltimore, MD, USA
Ihab R Kamel Russell H Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions. Baltimore, MD, USA

DOI: https://doi.org/10.6092/1590-8577/1400

Keywords: Autoimmune Diseases, Diffusion Magnetic Resonance Imaging, Pancreatitis

Abstract

Context Autoimmune pancreatitis is a rare disorder characterized by the systemic deposition of IgG4 plasma cells. Extrapancreatic manifestations of autoimmune pancreatitis depend on the site of plasma cell deposition. The most common extrapancreatic site of involvement is the bile duct followed by the retroperitoneum and kidneys. Case report We report a case of a patient with autoimmune pancreatitis and renal lesions who underwent MRI prior to and after corticosteroid therapy. Conclusion We emphasize the role of diffusion weighted imaging (DWI) and apparent diffusion coefficient (ADC) findings on MRI in evaluating the response to steroid therapy.

Image: Axial post contrast T1WI through the level of the kidneys.

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Author Biography

Vivek Gowdra Halappa, Russell H Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions. Baltimore, MD, USA

Russell H Morgan Department of Radiology

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