Laryngocele arises as herniation of laryngeal mucosa through the following membrance: (AIIMS May 2010)
Laryngocele is an air-filled cystic swelling which occurs due to dilatation of saccule.
Saccule is a diverticulum arising from anterior part of ventricle/sinus of larynx. Q
External laryngocele is one in which distended saccule herniates through the thyrohyoid membrane? and presents as a reducible swelling in the neck, which increases in size on c?ughing or performing ValsalvA.