This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous ENT, Subject name: ENT
Steeple sign is seen in case of 
Select and explain. 
A. Acute epiglottitis, B. Diphtheria, C. Acute tonsillitis, D. Acute Laryngo tracheo bronchitis
D: Acute Laryngo tracheo bronchitis
Answer: D: Acute Laryngo tracheo bronchitis 
Explanation: X-ray finding in Acute LaryngotracheobronchitisIt is an inflammatory condition of the larynx, trachea and bronchi.Mostly, it is a viral infection (parainfluenza type I and II) affecting children between 6 months and 3 years of age. - Thumb sign is seen in Acute epiglottitisDhingra 6e pg: 290