ENT Which among the following causes ‘thumb sign’ on an X-ray lateral view of the neck? A Acute epiglottitis B Acute laryngo trachea bronchitis C Acute tonsillitis D Acute laryngitis 💡 Explanation Which among the following causes 'thumb sign' on an X-ray lateral view of the neck? ✓ Correct Answer: A. Acute epiglottitis