| Abstract: |
secretory otitis media is the presenee of non-purulentfluid in the middle ear cavity .it dates back to Wathen(1756) who was the .first one who ”recognised the disease as a.separate entity. It is a common problem in the pre-schooland school age group, so that Poulsen and tos (1980) assumed 75-90% ofall children have at least one episode ofsecretory otitis media and Li tton and Mocabe (1963) .reperted 10%.The anatomy and physiology of the e us trachLan tube wereThe tube is normally closed but opens duringthrough active contraction of the tensor palatifunctions are ventilation and clearance.
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