Size of the human mastoid air cell system.
D000293:Adolescent; D000388:Air; D001846:Bone Development; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008416:Mastoid / Q000166:cytology* / Q000254:growth & development* / Q000473:pathology*; D008417:Mastoiditis / Q000473:pathology; D010031:Otitis / Q000473:pathology