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Croup
Etiology: viral
Imaging: glottic + subglottic process — AP – loss of normal shoulders of subglottic trachea due to subglottic edema = church steeple sign — Lateral – narrowing or loss of definition of subglottic trachea, hypopharynx distension, normal epiglottis/areyepiglottic folds
Clinical: most common cause acute upper airway obstruction in 6 months – 3 years, inspiratory stridor, no dysphagia, change in cough sound due to vocal cord involvement – barky
Cases of Croup
AP + lateral radiographs of the airway show narrowing of the subglottic trachea (steeple sign) and overdistension of the hypopharynx.