Management of orbital subperiosteal abscess in children

Objectives To present guidelines for the management of an orbital subperios teal abscess (SPA) in children and to assess the efficacy and safety of tra nsnasal endoscopic drainage of an orbital SPA. Setting: Tertiary care children's hospital. Patients: Nineteen patients treated for an SPA between July 1997 and Decemb er 1999. The age of the patients ranged from 17 months to 14 years (mean, 6 years). The male-female ratio was 10:9. Treatment modalities included tran snasal endoscopic drainage (n=11), external drainage (n=3), and intravenous antibiotics alone (n=5). Results: Bilateral pansinusitis was the most common cause. All patients rec eived an initial trial of intravenous antibiotics. Based on the Fisher exac t test, no statistically significant differences were detected for age, sex , presence of gaze restriction, and radiographic findings. Based on multipl e logistic regression, degree of proptosis was the only significant multiva riate predictor of surgery (P =.003). The estimated probability of surgery was 6% when there was no proptosis, and 92% for 2 mm of proptosis. The loca tion of the SPA determined the route of surgical drainage. Eleven patients with a medially based SPA underwent drainage via the transnasal endoscopic approach, and 3 with a superior SPA underwent drainage externally. The exte rnal approach was associated with a longer hospital stay (median, 7 days) t han either the endoscopic or the intravenous antibiotic approach (median, 5 days).