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Semin Musculoskelet Radiol 2024; 28(05): 651-656
DOI: 10.1055/s-0044-1788578
Didactic Case Report

Inflammatory Pseudotumor of the Ulnar Nerve Mimicking a Malignant Peripheral Nerve Sheath Tumor: A Radiologic Puzzle

Eimantas Abelkis
1   Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
2   Department of Radiology, HagaZiekenhuis, The Hague, The Netherlands
,
Kirsten van Langevelde
1   Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
,
Thom Doeleman
3   Department of Pathology, Leiden University Medical Centre, Leiden, the Netherlands
4   Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
,
Justus Groen
5   Department of Neurosurgery, Leiden Nerve Center, Leiden University Medical Center, Leiden, The Netherlands
,
Ana Navas Cañete 
1   Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
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Abstract

Inflammatory pseudotumor (IPT) of a peripheral nerve is a rare non-neoplastic tumefactive inflammatory condition, often mimicking malignancy. The etiology of this condition is still unknown. Clinically and radiologically, the lesion can mimic a malignant tumor. This case report represents, as far as we know, the first publication describing the ultrasonography findings and the results of advanced dynamic contrast-enhanced magnetic resonance imaging (MRI) and diffusion-weighted MRI of IPT in a peripheral nerve. Suspicion of this entity on imaging can speed up the definitive diagnosis and potentially avoid overly radical treatment.

Keywords

inflammatory pseudotumor of a peripheral nerve - peripheral nerve pseudotumor - inflammatory pseudotumor magnetic resonance imaging - inflammatory pseudotumor ultrasonography


Publication History

Article published online:
15 October 2024

© 2024. Thieme. All rights reserved.

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