Cervical suppurative lymphadenitis in children: microbiology, primary sites of infection, and evaluation of antibiotic treatment.

ABSTRACT

PURPOSE: The significant pathogens associated with paediatric cervical suppurative lymphadenitis (CSL) are unclarified, and there is a lack of clinical evaluations of antibiotic regimens in paediatric CSL. We aimed to (1) explore the bacterial findings and the associated primary sites of infection in paediatric cases of CSL and (2) evaluate the clinical outcomes in patients treated with different antibiotic regimens. METHODS: All children (< 18 years) treated for non-mycobacterium CSL at the Department of Otorhinolaryngology, Aarhus University Hospital, from 2001 to 2018 were retrospectively evaluated. RESULTS: Eighty-five patients were included in the study. The prevalent isolates were S. aureus (57%), S. pyogenes (17%), non-haemolytic streptococci (11%), and F. necrophorum (3%). The primary sites of infection were identified in 30 (35%) patients. The most common sites were the oropharynx (n = 15), the middle ear (n = 10), and the skin (n = 5). All patients were treated with surgical incision and antibiotics. No statistically significant differences were found between patients treated with antibiotics covering streptococci (n = 60) versus antibiotics covering streptococci and S. aureus (n = 25) in terms of duration of hospitalisation (median 4 vs 4 days, p = 0.26), altered antibiotic treatment because of insufficient clinical or biochemical progress (7% vs 12%, p = 0.41), and abscess recurrence (8% vs 12%, p = 0.69). CONCLUSION: S. aureus was the predominant pathogen in paediatric CSL at all cervical levels, and even in cases with evidence of primary site infection not normally associated with S. aureus. We were unable to underscore the importance of antibiotic treatment covering S. aureus based on evaluation of the clinical outcomes.