Pneumatization of the mastoid in relation to 'glue ear'.
D000293:Adolescent; D000388:Air; D002648:Child; D002675:Child, Preschool; D002781:Cholesteatoma / Q000150:complications; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008416:Mastoid / Q000473:pathology*; D010033:Otitis Media / Q000209:etiology / Q000473:pathology* / Q000628:therapy