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Sinusitis in Infants and Children

The major clinical problem in considering a diagnosis of sinusitis is differentiating uncomplicated upper respiratory tract infection from a secondary bacterial infection of the paranasal sinuses that may benefit from antimicrobial therapy. A diagnosis of sinusitis is suggested by presentation with protracted upper respiratory tract symptoms or a cold that is more severe than usual with fever and purulent nasal discharge. Confirmatory tests of sinus disease are transillumination (useful in adolescents if interpretation is confined to the extremes — normal or absent); radiographic findings of opacification, mucous membrane thickening, or an air-fluid level; and sinus aspiration (indicated for severe pain, clinical failures, or complicated disease). When clinical signs and symptoms are accompanied by abnormal radiographic findings, bacteria in high colony count are recovered from the maxillary sinus aspirate in 70% of patients. The common bacterial species recovered from children with acute maxillary sinusitis are Streptococcus pneumoniae, Moraxella (Branhamella) catarrhalis, and Hemophilus influenzae.