What is the classic radiographic finding in epiglottitis?

The classic radiographic finding in epiglottitis is often referred to as the "thumbprint sign." This sign is characterized by a swollen epiglottis that appears enlarged and resembles the shape of a thumb on lateral neck radiography. This swelling occurs due to inflammation and can indicate that the airway may be compromised, making early recognition critical for management.

In infants and young children, epiglottitis can lead to rapid onset of respiratory distress, so understanding this radiographic sign is essential for timely diagnosis and intervention. The identification of the thumbprint sign on imaging highlights the need for potential airway management, as the condition can progress quickly.

Other signs such as the steeple sign, which is more associated with croup, or terms like butterfly sign and normal trachea, do not represent features characteristic of epiglottitis. Thus, the thumbprint sign remains the definitive indicator for this serious condition.