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TABLE 75.3 LIFE-THREATENING CAUSES OF STRIDOR Usually febrile Epiglottitis/Supraglottitis Tracheitis Retropharyngeal abscess Usually afebrile Foreign body Anaphylaxis Angioneurotic edema Neck trauma Neoplasm (compressing trachea) Thermal or caustic injury FIGURE 75.1 Diagnostic approach to stridor Stridor in older children may be caused by papillomas or neoplastic processes Patients with papillomas generally present between and years of age with