PMC7676922_01
Fiberscopic examination of the larynx in case 1. (a) Pre-endoscopic partial arytenoidectomy (EPA). The bilateral vocal cords were fixed at the paramedian position. Suture pulling of the vocal cords could not be confirmed. (b) Post-EPA. The right arytenoid cartilage has been removed, and the posterior part of the glottis was widened.
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fig1
Moreover, the glottis was closed (Figure 1(a)). Three years after the surgery, the patient did not have problems in both vocalisation and swallowing (Figure 1(b)).
Procedures during endoscopic partial arytenoidectomy. (a) An anterior incision was made with a semiconductor laser in the right arytenoid. (b) The right arytenoid cartilage was visualised and removed partially. (c) The mucous membrane was preserved and fixed with fibrin glue; the glottis was widened.
CRIOT2020-8822164.002.jpg
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fig2
The mucous membrane was preserved and fixed with fibrin glue to cover the excised cartilage defect (Figure 2).
PMC7676922_02
Fiberscopic examination of the larynx in case 2. (a) Pre-endoscopic partial arytenoidectomy (EPA). The right vocal cord, which should have been pulled laterally, was loose and fixed at the paramedian position. (b) Post-EPA. The right arytenoid cartilage was removed, and the posterior part of the glottis was widened.
CRIOT2020-8822164.003.jpg
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fig3
The right vocal cords were fixed midway, with no traction (Figure 3(a)).