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Primary Pyomyositis Caused by Kingella kingae in a 21-Month-old Infant: A Case Report
Moez Chargui1, Giacomo De Marco1, Christina Steiger1
1From the Unit of Pediatric Orthopedics, Department of the Woman, the Child and the Adolescent.
Insights
A rare case of primary pyomyositis in a young child was caused by Kingella kingae bacteria. This finding highlights the need to consider this bacterial cause in children with pyomyositis.
Area of Science:
- Pediatric infectious diseases
- Bacterial myositis research
- Microbiology of invasive infections
Background:
- Primary pyomyositis is a bacterial infection of muscle, typically seen in tropical regions.
- Kingella kingae is an emerging pathogen increasingly recognized in pediatric infections.
- Biceps cruralis pyomyositis is exceptionally rare, especially in non-tropical settings.
Observation:
- A 21-month-old girl presented with primary pyomyositis of the biceps cruralis.
- The causative agent was identified as Kingella kingae.
- This represents a rare manifestation of invasive K. kingae infection.
Findings:
- Kingella kingae can cause primary pyomyositis, even in the biceps cruralis.
- This bacterial etiology should be considered in pediatric pyomyositis cases.
- The incidence of K. kingae-associated pyomyositis, while rare, is significant in children under four.
Implications:
- Clinicians should consider Kingella kingae in the differential diagnosis of pediatric pyomyositis.
- Early identification of K. kingae is crucial for appropriate treatment and management.
- This case expands the spectrum of invasive infections associated with Kingella kingae.
Abstract:
The authors report a rare case of an unusual primary pyomyositis of the biceps cruralis assigned to Kingella kingae in a 21-month-old girl. The reported case demonstrated that primary pyomyositis may be encountered during invasive infection due to K. kingae even if this manifestation remains rare. This bacterial etiology must, therefore, be evoked when a primary pyomyositis is observed, and this is in particular in children under 4 years of age.
