[Staphylococcus aureus isolated from a case of lymph node botryomycosis]

Area of Science:

• Medical Microbiology
• Pediatric Infectious Diseases
• Dermatology

Background:

• Botryomycosis is a rare, chronic bacterial infection typically affecting skin and subcutaneous tissues.
• Visceral involvement is more common in immunocompromised individuals.
• This report focuses on a pediatric case with unusual presentation.

Observation:

• A 4-year-old boy presented with an inguinal inflammatory mass and itchy papules, but no fever.
• Blood tests revealed significant inflammation and hypereosinophilia.
• Histopathology of the lymph node showed granulomatous adenitis with Splendore-Hoeppli phenomenon.

Findings:

• Gram-positive bacteria, identified as Staphylococcus aureus via culture, were observed within the Splendore-Hoeppli phenomenon.
• The diagnosis of Staphylococcus aureus lymph node botryomycosis was established.
• The patient responded well to antibiotic treatment.

Implications:

• This case expands the clinical spectrum of botryomycosis presentation in children.
• Early diagnosis and appropriate antibiotic therapy are crucial for successful outcomes.
• Highlights the importance of considering botryomycosis in pediatric inflammatory conditions, even without typical signs of infection.