<prompt> Steeple sign is seen in case ofAcute epiglottitisDiphtheriaAcute tonsillitisAcute Laryngo tracheo bronchitis  <response>: 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 