‘Thumb sign’ in X-ray

‘Thumb sign’ in X-ray seen in –

• Acute epiglottitis
• Pathology – edematous and enlarged epiglottis
• Found in which investigation – seen on lateral soft-tissue radiograph of the neck
• What ‘Thumb sign’ in X-ray suggests? – Diagnosis of acute infectious epiglottitis

What is omega epiglottis?

• Omega epiglottis is a variant configuration of the normal epiglottis in which the lateral folds are curled inwards. The configuration is not necessarily pathologic but has been associated with higher rates of laryngomalacia.