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Published in: European Radiology 4/2020

01-04-2020 | Magnetic Resonance Imaging | Musculoskeletal

MRI and clinical features of acute fungal discitis/osteomyelitis

Authors: F. Joseph Simeone, Jad S. Husseini, Kaitlyn J. Yeh, Santiago Lozano-Calderon, Sandra B. Nelson, Connie Y. Chang

Published in: European Radiology | Issue 4/2020

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Abstract

Objectives

To compare imaging and clinical features of fungal and Staphylococcus aureus discitis-osteomyelitis (DO) for patients presenting for CT-guided biopsies.

Methods

Our study was IRB-approved and HIPAA-compliant. A group of 11 fungal DO (FG) with MRI within 7 days of the biopsy and a control group (CG) of 19 Staphylococcus aureus DO were evaluated. Imaging findings (focal vs diffuse paravertebral soft tissue abnormality, partial vs complete involvement of the disc/endplate), biopsy location, pathology, duration of back pain, immune status, history of intravenous drug, history of prior infection, current antibiotic treatment, and history of invasive intervention. Differences were assessed using the Fisher exact test and Kruskal-Wallis test. Naïve Bayes predictive modeling was performed.

Results

The most common fungal organisms were Candida species (9/11, 82%). The FG was more likely to have focal soft tissue abnormality (p = 0.040) and partial disc/endplate involvement (p = 0.053). The clinical predictors for fungal DO, in order of importance, back pain for 10 or more weeks, current antibiotic use for 1 week or more, and current intravenous drug use. History of invasive instrumentation within 1 year was more predictive of Staphylococcus aureus DO.

Conclusion

MRI features (focal partial soft tissue abnormality and partial involvement of the disc/endplate) in combination with clinical features may help to predict fungal species as a causative organism for DO.

Key Points

• MRI features of discitis-osteomyelitis (focal partial soft tissue abnormality and partial involvement of the disc/endplate) in combination with clinical features may help to predict fungal species as a causative organism for DO.
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Metadata
Title
MRI and clinical features of acute fungal discitis/osteomyelitis
Authors
F. Joseph Simeone
Jad S. Husseini
Kaitlyn J. Yeh
Santiago Lozano-Calderon
Sandra B. Nelson
Connie Y. Chang
Publication date
01-04-2020
Publisher
Springer Berlin Heidelberg
Published in
European Radiology / Issue 4/2020
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-019-06603-z

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