Abstract
The middle ear and the bony and cartilaginous portions of the eustachian tube (ET) were studied histopathologically in 20 temporal bones from 19 infants, aged 45 minutes to 12 months. Otitis media (OM) was observed in 17 of 20 bones, and 16 bones with OM had an effusion. Otitis media was more severe in the ears of cleft palate infants compared to those with high-arched palates. Inflammation was present in the bony portion of the ET in 15 of 17 temporal bones with OM, but appeared to be less marked than that present in the middle ear. In addition, inflammation of the cartilaginous portion of the ET appeared to be less severe than in its bony portion. Inflammation of the middle ear and the ET appeared to be more pronounced in older infants, particularly in those with cleft palates.
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