ORL - Dx LARYNX Flashcards
What is the main function of the larynx?
Protection of airway
What is the main function of the larynx?
Protection of airway
includes the epiglottis, the aryepiglottic folds, the false vocal folds, the false vocal cords and the ventricles
Supraglottis
comprises the inferior floor of the ventricle, the true vocal foris, and the arytenoids
Glottis
begins 5-10mm below the free edge of the TVF and to extend to the inferior margin of the cricoid cartilage
Subglottis
Anteriorly, the normal laryngeal ventricle has a small outpouching called
saccule and laryngeal appendix
is a blind sac that extends upward between the False vocal fold and thyroid cartilage,
just posterolateral to the edge of the epiglottis at the level of the petriole
saccule and laryngeal appendix
Air-filled of the dilated saccule
Laryngocoele
Mucus-filled of the dilated saccule
Saccular cyst
Purulent-filled of the dilated saccule
Laryngopyocele
tends to protrude from the anterior ventricle toward the laryngeal vestibule
Anterior saccular cyst
lesion tends to dissect more superiorly and laterally up into the false and aryepiglottic folds,
sometimes bulging not only to those structures medially, but also to the medial wall of the pyriform sinus (laterally) or even to fill the vallecula
Lateral saccular cyst or laryngocoele, internal only
tends to dissect as above but also to penetrate through
the thyrohyoid membrane and to appear as a swelling palpable in the neck
Lateral saccular cyst or laryngocoele, internal/external
Squamous papillomas caused by HPV are the most common benign neoplasms
RECURRENT RESPIRATORY PAPILLOMATOSIS
The majority of the RECURRENT RESPIRATORY PAPILLOMATOSIS are the result of what HPV type
subtypes 6 and 11