[Acute infectious mastoid complications in infancy].

The incidence of acute mastoiditis accounts for 0.004% of acute middle otitis. Nowadays there is a decrease of number of mastoiditis and its complications, but from time to time are seen outbreaks without logical explanation of facts. We report 4 clinical cases of acute mastoiditis complicated with subperiosteal abscess, in children between 8 and 23 month old, seen at our department during the last 3 years, three of them diagnosed in a 4-month term.