Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2024 Feb 3;16(2):e53483.
doi: 10.7759/cureus.53483. eCollection 2024 Feb.

Staphylococcus aureus Bacteremia With Disseminated Multiple Foci and Pyomyositis in an Immunocompetent Patient: A Case Report

Ryohei Ono  1 , Izumi Kitagawa  1   2
Affiliations
Case Reports

Staphylococcus aureus Bacteremia With Disseminated Multiple Foci and Pyomyositis in an Immunocompetent Patient: A Case Report

Ryohei Ono et al. Cureus. .

Abstract

Pyomyositis is an uncommon primary infection of skeletal muscle resulting in muscle inflammation followed by pus formation. Pyomyositis is typically caused by Staphylococcus aureus (S. aureus), and most cases are associated with skin penetration and/or immunosuppressive conditions in tropical or even temperate climates. We report a previously healthy, immunocompetent 44-year-old man who presented with fever and right lower back pain. He had received an analgesic injection for his back pain 12 days prior to this visit. His clinical course was further complicated by the coexistence of multiple muscular abscesses, renal infarction, and septic arthritis of the right shoulder. He underwent computed tomography-guided drainage of the abscess. The abscess and blood cultures were positive for methicillin-susceptible S. aureus. The patient responded well to prolonged treatment with cefazolin and cephalexin and was discharged 12 weeks after initial admission.

Keywords: bacteremia; disseminated multiple foci; immunocompetent; pyomyositis; staphylococcus aureus.

PubMed Disclaimer

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1
Figure 1. Contrast computed tomography scan at admission.
(a: iliopsoas muscle, b: piriformis muscle, c: plantaris muscle, d: renal infarction) Arrows show abscesses.
Figure 2
Figure 2. Shoulder T2-weighted magnetic resonance imaging showing arthritis with a high signal.
Figure 3
Figure 3. Follow-up contrast computed tomography scan on the 85th day after the admission date showing no abscess in the iliopsoas muscle.
Figure 4
Figure 4. Clinical course.
See this image and copyright information in PMC

Similar articles

See all similar articles

References

    1. Staphylococcus aureus pyomyositis compared with non-Staphylococcus aureus pyomyositis. Burdette SD, Watkins RR, Wong KK, Mathew SD, Martin DJ, Markert RJ. J Infect. 2012;64:507–512. - PubMed
    1. Primary pyomyositis and disseminated septic pulmonary emboli: a reactivated staphylococcal infection? Savvidou S, Kalogiannis E, Tsakiri K, Gavra M, Tsona A. Braz J Infect Dis. 2014;18:457–461. - PMC - PubMed
    1. Tropical pyomyositis (myositis tropicans): current perspective. Chauhan S, Jain S, Varma S, Chauhan SS. Postgrad Med J. 2004;80:267–270. - PMC - PubMed
    1. Staphylococcus aureus bacteremia in immunosuppressed patients: a multicenter, retrospective cohort study. Sasson G, Bai AD, Showler A, et al. Eur J Clin Microbiol Infect Dis. 2017;36:1231–1241. - PubMed
    1. Secondary myopathy due to systemic diseases. Finsterer J, Löscher WN, Wanschitz J, Quasthoff S, Grisold W. Acta Neurol Scand. 2016;134:388–402. - PMC - PubMed

Publication types

LinkOut - more resources

-