RT Book, Section A1 Coombs, Carmen M. A2 Tintinalli, Judith E. A2 Ma, O. John A2 Yealy, Donald M. A2 Meckler, Garth D. A2 Stapczynski, J. Stephan A2 Cline, David M. A2 Thomas, Stephen H. SR Print(0) ID 1166593480 T1 Ear and Mastoid Disorders in Infants and Children T2 Tintinalli's Emergency Medicine: A Comprehensive Study Guide, 9e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260019933 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1166593480 RD 2024/03/29 AB Ear pain, or otalgia, is one of the most common pediatric outpatient chief complaints. The differential diagnosis is listed in Table 121-1. This chapter discusses acute otitis media, otitis media with effusion, otitis externa, acute mastoiditis, and foreign body. The ear is divided into three major parts: (1) the outer ear, which includes the auricle/pinna 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 121-1).