History An 18-month-old baby girl is bought to the emergency department by her parents, as they are concerned about her noisy breathing. She has had a mild cough for the past 24 h and her temperature is elevated. She is up to date with her vaccinations and has had no developmental problems. There is no other relevant history. Examination Her oxygen saturation is 94 per cent on air. The baby is restless and has a hoarse cry.
There is an audible stridor at rest. The baby has a low-grade fever with a mildly increased respiratory rate. There is no evidence of cyanosis. Auscultation of the chest is difficult but there is an audible inspiratory noise. What is the differential diagnosis? *This case is from Docplexus editorial team for educative purpose only Source: 100 Cases in Surgery Stay connected, the answer will be posted in next 48 h!