title: Head torsion technique for detailed observation of larynx and hypopharynx.
abstract: We introduce here an easy but effective method for detailed observation of the larynx and hypopharynx. During the endoscopic observation, the patient's head is turned to one side. Anatomical structures on the same side of the endolarynx, such as the laryngeal ventricle and inferior surface of the vocal fold, are easily observed. In addition, observation of the opposite side of the hypopharynx also becomes easier. Such head turning is also useful in patients with an oblique larynx, in whom the epiglottis obstructs insertion of the endoscope. This is a simple but very effective technique for laryngeal and hypopharyngeal observation.
authors.affiliation: Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan. atsunoda@mac.com
authors.forename: A
authors.initials: A
authors.lastname: Tsunoda
authors.forename: A
authors.initials: A
authors.lastname: Ishihara
authors.forename: S
authors.initials: S
authors.lastname: Kishimoto
authors.forename: R
authors.initials: R
authors.lastname: Tsunoda
authors.forename: K
authors.initials: K
authors.lastname: Tsunoda
mesh_terms: D004724:Endoscopy / Q000379:methods*; D006801:Humans; D007013:Hypopharynx / Q000033:anatomy & histology*; D007828:Laryngoscopy / Q000379:methods; D007830:Larynx / Q000033:anatomy & histology*; D008875:Middle Aged; D012399:Rotation; D014827:Vocal Cords / Q000033:anatomy & histology