A 2 yrs old child presented with following x- ray finding. What is the moslt likely diagnosis?

The given X-ray Shows Steeple Sign/ Pencil Tip Sign. ACUTE LARYNGOTRACHEOBRONCHITIS (CROUP): i.e. narrowing of subglottic region is seen in chest X-ray of patients of laryngotracheobronchitis, Onset is gradual with prodrome of upper respiratory symptoms fever usually low grade, Painful croupy cough (barking cough or seal barks cough) hoarseness and stridor. ACUTE EPIGLOTTITIS (SUPRAGLOTTIC LARYNGITIS)- It is acute inflammatory condition of the supraglottic structures Epiglottis, Aryepiglottic fold and arytenoids. Child prefers sitting position with hyperextended neck(tripod sign)which relieves stridor, Drooling of saliva present as child has dysphagia ,Lateral soft tissue X-ray of neck shows: Swollen epiglottis (Thumb sign), Absence of deep well-defined vallecula (vallecula sign).