In the context of radiological findings and certain respiratory conditions, the "steeple sign" is a significant indicator. It refers to a specific narrowing observable in the subglottic region of the trachea, resembling the steeple of a church. This sign is most commonly associated with a respiratory condition found in pediatric cases. Let us analyze the given options:
Acute epiglottitis: This condition is characterized by the swelling of the epiglottis, typically resulting in the "thumb sign" on lateral neck X-rays, rather than the steeple sign.
Acute laryngotracheobronchitis: Also known as croup, this condition often presents with the steeple sign on a frontal neck X-ray. It is due to the narrowing of the upper airway caused by edema.
Laryngeal papillomatosis: This involves benign tumors in the larynx and does not typically present with the steeple sign.
Bilateral abductor paralysis: In this condition, the primary feature is the paralysis of the vocal cords; it is unrelated to the appearance of the steeple sign.
Given this analysis, the correct condition associated with the steeple sign is:
Acute laryngotracheobronchitis
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