C, Extrathorakale Ausbreitung: supraklavikulre Lymphknoten, Metastastasen. Why are children less than 3 years old especially prone to otitis media?. The protocol for our JAOA study.Clinical practice guideline: Otitis media with effusion. Otitis externa is most commonly caused by infection (usually bacterial, When the canal is quite swollen, a cotton wick specifically designed for. Otitis externa Otitis externa is an infection Otitis media Otitis media is an infection of the middle ear.