A congenital or acquired condition of underdeveloped or degeneration of CARTILAGE in the LARYNX. This results in a floppy laryngeal wall making patency difficult to maintain.

A thin leaf-shaped cartilage that is covered with LARYNGEAL MUCOSA and situated posterior to the root of the tongue and HYOID BONE. During swallowing, the epiglottis folds back over the larynx inlet thus prevents foods from entering the airway.

Pathological processes involving any part of the LARYNX which coordinates many functions such as voice production, breathing, swallowing, and coughing.

Restoration, reconstruction, or improvement of a defective or damaged LARYNX.

Examination, therapy or surgery of the interior of the larynx performed with a specially designed endoscope.

A condition of substandard growth or diminished capacity to maintain normal function.

Noises, normal and abnormal, heard on auscultation over any part of the RESPIRATORY TRACT.