Acute mastoiditis in an Italian pediatric tertiary medical center: a 15 – year retrospective study

Abstract Background Acute mastoiditis is the main suppurative complication of acute otitis media. Its incidence ranges from 1.2 to 4.2/100.000 children/year and a rise has been reported in the last years. There are controversial data regarding risk factors for mastoiditis and its complications. Aim of the study: to evaluate demographics and clinical characteristics of children with acute mastoiditis and to identify possible risk factors for complications. Methods We retrospectively reviewed medical charts of all the children aged 1 month-14 years admitted to our Paediatric Emergency Department from January 2002 to December 2016. Results One hundred forty-seven cases (97 males and 50 females) were included in the analysis, mean age was 4.8 ± 3.6 years and 28.2% of the patients were younger than 2 years. We found an increasing number of mastoiditis per year during the last 3 years of the study. Children younger than 2 years were less treated with antibiotics for acute otitis media or treated for a shorter period (p