RT Book, Section A1 Coombs, Carmen A2 Tintinalli, Judith E. A2 Stapczynski, J. Stephan A2 Ma, O. John A2 Yealy, Donald M. A2 Meckler, Garth D. A2 Cline, David M. SR Print(0) ID 1121507452 T1 Ear and Mastoid Disorders in Infants and Children T2 Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9780071794763 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1121507452 RD 2024/03/28 AB Ear pain, or otalgia, is one of the most common pediatric outpatient chief complaints. The differential diagnosis is listed in Table 118-1. This chapter discusses acute otitis media, otitis media with effusion, otitis externa, acute mastoiditis, and foreign body. Anatomically, the ear is divided into three major parts: (1) the outer ear, which includes the auricle and the external auditory canal; (2) the middle ear, which is bound by the tympanic membrane laterally, contains the auditory ossicles, and is connected to the nasopharynx via the eustachian tube; and (3) the inner ear, which includes the semicircular canals, the cochlea, and the auditory nerve (Figure 118-1).