<prompt> Laryngomalacia is characterized by:Usually present at about the age of 5 yearsBiphasic stridorElongated epiglottis with thin aryepiglottic folds on laryngoscopyBest treatment by epiglottectomv  <response>: Ans: C Elongated epiglottis with thin aryepiglottic folds on laryngoscopy Ref: Diseases of the Ear Nose and Throat by PL Dhingra.5th edn .20I0.pg314Explanation:LaryngomalaciaDue to excessive flaccidity of the supraglottis which gets sucked in during inspirationMost common congenital cause for stridorPresents soon after birth and disappears by 2 years of ageThere is inspiratory stridor which worsens on crying and decreases on lying supineOE long elongated omega shaped epiglottis with elongated and floppy aryepiglottic folds and prominent arytenoidsTreatment is mostly conservative and reassuranceSevere cases may require surgery like epiglo- ttoplasty. supraglottoplasty 