“…The second factor is the arrangement of the mucosa and sub-mucosa. The mucosa, while firmly attached to the posterior surface of the epiglottis, is loosely attached on the anterior surface and along the aryepiglottic folds (Lederer, 1946); inflammatory extravasation and oedema will accordingly be localized mainly to the front and sides of the epiglottis, and will cause its lateral edges to curl in and the tip to be bent backwards. From the changes seen in infants who were examined frequently from the earliest stages it appears that if these induced deformities are maintained for a sufficient length of time they may persist even after the inflammatory reaction has subsided.…”