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Pyomyositis during induction chemotherapy for acute lymphocytic leukemia
1Department of Pediatrics, Strong Children's Medical Center, Rochester, New York 14642-8667, USA.
Journal of Pediatric Hematology/Oncology
|August 1, 1996
Summary
Pyomyositis, a bacterial muscle infection, can occur in children with acute lymphocytic leukemia (ALL) after chemotherapy. Early diagnosis and treatment of this rare condition are crucial to prevent complications.
Area of Science:
- Infectious Diseases
- Pediatric Oncology
- Musculoskeletal Disorders
Background:
- Pyomyositis is uncommon in temperate climates and often presents subtly, leading to diagnostic challenges.
- Acute lymphocytic leukemia (ALL) patients undergoing induction chemotherapy are a unique population for pyomyositis presentation.
Observation:
- Two boys with ALL developed severe extremity pain and tenderness post-chemotherapy, initially mistaken for vincristine neurotoxicity.
- Progressive symptoms and imaging (gallium, CT scans) revealed Staphylococcus aureus-induced muscle abscesses, confirming pyomyositis.
Findings:
- Both patients with pyomyositis secondary to ALL and chemotherapy responded favorably to surgical drainage and antibiotic treatment.
- Staphylococcus aureus was identified as the causative pathogen in both reported cases.
Implications:
- Pyomyositis should be considered in the differential diagnosis for children with ALL presenting with muscle pain, especially after chemotherapy.
- Prompt medical and surgical intervention for pyomyositis in this vulnerable population can significantly reduce morbidity and mortality.