Endoscopic direct laryngoscopy using 700rigid telescope was carried out to examine the supraglottis, vocal cords, valleculae and the interarytenoid
Severe inflammation was observed involving the true vocal folds, subglottis, trachea, and the interarytenoid
region (figure 4, A).
PET/CT imaging showed hypermetabolic focus on left aryepiglottic fold and interarytenoid
area maximum standard uptake values ([SUV.sub.max]): 8.9 without any anatomical correlation.
The vocal cords and interarytenoid
notch could not be visualized.
Floppy epiglottis was visualized, and glottis stenosis with interarytenoid
adhesion was seen.
Direct laryngoscopy was performed, and the foreign body was seen extending just above the vocal folds and in the interarytenoid
On ENT examination, indirect laryngoscopic examination revealed an ulcerative lesion over the epiglottis, arytenoids and interarytenoid
Like other muscles innervated by cranial nerves, the intrinsic laryngeal muscles, for example, the thyroarytenoid that comprises the vocal folds, as well as the muscles that adduct (interarytenoid
and lateral cricoarytenoid), abduct (posterior cricoarytenoid), and lengthen the vocal folds (cricothyroid), are composed of muscle fibers that differ from most abdominal and limb muscle.
While the exposure of the mild and moderate pH levels in the upper airway may contribute to subtle tissue changes (e.g., posterior interarytenoid
edema and erythema or accumulation of endolaryngeal mucous), the potential effects on voice quality, including hoarseness, loss of range, and vocal fatigue, are both highly variable and unpredictable.
The effective medial excursion magnitude of vocal fold produced by the three adductors physiologically is sequentially as following: Rotation effect by lateral cricoarytenoid (LCA), mass or volume effect by thyroarytenoid (TA) and then shift effect by interarytenoid
By the effect of sevoflurane the leech departed from the interarytenoid