Added value of restricted diffusion in acute pyelonephritis: Two cases with different clinical presentations.

Chris Hsu, Rashid Syed, Mohamed Tantawi, Gopal Yadav, Peeyush Bhargava

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Article in Radiology case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Chris HsuJohn Sealy School of Medicine, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA.

Rashid SyedJohn Sealy School of Medicine, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA.

Mohamed TantawiDepartment of Radiology, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA.

Gopal YadavDepartment of Radiology, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA.

Peeyush BhargavaDepartment of Radiology, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acute pyelonephritis (APN) is characterized as infection of the renal parenchyma and collecting system generally evaluated by integrating clinical assessment, blood tests, urinalysis, and urine culture. If complications are suspected, computed tomography (CT) is the preferred modality; however, if inconclusive or contraindicated, magnetic resonance imaging (MRI) can provide valuable diagnostic information, though less well-described in literature. Herein, we report 2 cases in which MRI demonstrated restricted diffusion in the kidneys, corresponding to APN. In the first case, MRI confirmed findings established by CT (acute lobar nephronia); in the other, MRI provided primary diagnostic evidence of APN after indeterminate CT and US in a patient with prior history of acute pyelonephritis.

Indexed as

Case reportDiffusion weighted imagingKidney infectionMRIRestricted diffusion

Identifiers

PMID42021767

DOI10.1016/j.radcr.2026.03.025

PMCPMC13097013

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