• Korean Journal of Bronchoesophagology
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• v.6 no.2
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• pp.189-191
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• 2000

Bifid epiglottis is a rare congenital laryngeal anormaly, usually associated with multiple con-genital anormalies which include digital anormalies and endocrinologic abnormalities. A notch or small indentation of the superior border of the epiglottis and, to a lesser degree, an epiglottis with a submucosal bifid appearance is a frequent occurrence. We report a 40-year-old woman with two distinct cartilaginous halves of the epiglottis, discovered incidentally during the physical examination.

• Korean Journal of Head & Neck Oncology
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• v.33 no.2
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• pp.71-73
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• 2017

Dysplastic epiglottis is extremely rare congenital malformation, which usually occurs in association with other laryngeal anomalies. Hypoplasia is the most common type in epiglottic malfomations. Other abnormalities include rudimentary, aplasia and bifid etc. Mostly, they are found in infancy and early childhood, and diagnosis at adulthood is extremely rare. A 69-year-old man with chronic cough and globus sense visited our clinic. Laryngoscopic findings revealed a unique form of epiglottis. He had no history of laryngeal trauma, tumors, head and neck surgery, and radiation. There was no another anomaly in the laryngo-pharynx. Because of a mass-like lesion at the apex of epiglottis, we performed the laryngeal microsurgery. The pathology revealed as granulation tissue. We report a rare and unique case of dysplastic epiglottis in elderly patient with a brief literature review.

• Korean Journal of Bronchoesophagology
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• v.16 no.2
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• pp.154-156
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• 2010

We report a case of actinomycotic infection in epiglottis. Actinomycosis in the head and neck area is relatively rare but extremely rare in the larynx. A 63-year old man presented with continuous discomfort of the throat while swallowing. He had a history of oral injury caused by a fish bone a few weeks prior. Upon Examination with a flexible laryngoscope, a whitish round mass was noted at the lingual surface of the epiglottis. Under local anesthesia, a punch biopsy was performed and showed the typical features of actinomycosis. The mass was removed using a Diode laser under suspension laryngoscope. Additive oral antibiotic therapy was done for 2 weeks. No definite recurrence was noted at the operation site and the patient is now free of disease.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.26 no.2
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• pp.137-140
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• 2015

Neurofibroma is characterized as a benign, slow growing neoplasm, originating from Schwann cells or fibroblast in peripheral nerve sheaths. It may appear as a solitary tumor or have multiple localizations in von Recklinghausen disease. They are commonly found in the gastrointestinal tract and laryngeal neurofibromas are extremely rare, accounting for only 0.03 to 0.1% of benign tumors of the larynx. The aryepiglottic fold and arytenoid are the common site of occurrence for laryngeal neurofibroma, because the branch of the superior laryngeal nerve is involved. We present a case of solitary plexiform neurofibroma arising from the laryngeal surface of epiglottis in a 55-year old female who found the lesion incidentally. We removed the tumor completely by transoral laser surgery and no recurrence was found after 7 months. The case of solitary neurofibroma arising from laryngeal surface of epiglottis has not been reported in Korea. We report this case regarding the diagnosis and treatment with review of literatures.

• Journal of Biomedical Engineering Research
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• v.43 no.2
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• pp.102-108
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• 2022

Purpose: To propose a deep learning-based clinical decision support technique for laryngeal disease on epiglottis, tongue and vocal cords. Materials and Methods: A total of 873 laryngeal endoscopic images were acquired from the PACS database of Pusan N ational University Yangsan Hospital. and VGG16 model was applied with transfer learning and fine-tuning. Results: The values of precision, recall, accuracy and F1-score for test dataset were 0.94, 0.97, 0.95 and 0.95 for epiglottis images, 0.91, 1.00, 0.95 and 0.95 for tongue images, and 0.90, 0.64, 0.73 and 0.75 for vocal cord images, respectively. Conclusion: Experimental results demonstrated that the proposed model have a potential as a tool for decision-supporting of otolaryngologist during manual inspection of laryngeal endoscopic images.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.28 no.1
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• pp.20-24
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• 2017

Laryngomalacia is the most common congenital anomaly that causes inspiratory stridor and airway obstruction in the newborn. Symptoms begin to appear after weeks of age, become worse at 4-8 months, improve between 8-12 months, and usually heal naturally at 12-18 months. Despite these common natural processes, the symptoms of the disease can be very diverse and, in severe cases, require surgical treatment. The diagnosis can be made by suspicion of clinical symptoms and direct observation of the larynx with the spontaneous breathing of the child. Typical laryngeal features include omega-shaped epiglottis, retroflexed epiglottis, short aryepiglottic fold, poor visualization of the vocal folds, and edema of the posterior glottis, including inspiratory supra-arytenoid tissue prolapse. In this review, we discuss the classification and treatment based on symptoms and laryngoscopic findings in patients with laryngomalacia.

• Phonetics and Speech Sciences
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• v.2 no.2
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• pp.79-83
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• 2010

As bolus enters the pharynx during the swallow, laryngeal closure takes place by approximating the epiglottis to the arytenoid Laryngeal Closure Duration(LCD) is the duration of contact between the arytenoids and the epiglottis from the first contact to the last(Logemann et al, 2000). Epiglottic inversion continues pharyngeal swallow stage is completed in order to protect the airway. The purpose of this study is to measure layrngeal closure duration (LCD) in three groups of subjects: a) 10 stroke patients who aspirate before and during the swallow(aspirators), b) 10 stroke patients who do not aspirate during the swallow c)10 normal control subjects. Means and standard deviation of LCD was analyzed in both 5ml and 10 ml thin liquids using 100msec timer in videoflouroscopic swallowing examination. The mean for each group was 0.15 seconds shorter from aspirators to control group. There was a significant difference between aspirators and normal subjects for laryngeal closure duration during the swallow. Laryngeal closure duration after a stroke lead to aspiration. However, only one of this temporal problem may not be enough to aspiration.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1982.05a
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• pp.9.1-9
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• 1982

The authors have measured various dimensions of the larynx of twenty adult cadavers. (male; 13, female; 7) The result were as follows, 1) Transverse diameter between the greater horns of the hyoid bone; M.52.58mm, F.43.07mm. 2) Transverse diameter between the lesser horns of the hyoid bone; M.36.20mm, F.30.20mm. 3) Transverse diameter of the thyroid cartilage; M.50.58mm, F.42.58mm. 4) Transverse diameter of the cricoid cartlage; M.30.14mm, F.26.94mm. 5) Distance from the lower margin of the hyoid bone to the thyroid notch; M.12.83mm, F.10.92mm. 6) Distance from the lower margin of the thyroid cartilage to the lower margin of the cricoid cartilage; M.16.40mm, F.10.26mm. 7) Distance from the upper margin of the thyroid cartilage to the lower margin of the cricoid cartilage; M.34.65mm, F.34.61mm. 8) Anteroposterior diameter of the cricoid cartilage; M.25.32mm, F.20.01mm. 9) Transverse diameter of the epiglottis; M.29.32mm, F.22.08mm. 10) Vertical diameter of the epiglottis; M.35.90mm, F.27.90mm. 11) Transverse diameter between the cuneiform tubercles; M.17.69mm, F.13.52mm. 12) Length of the vocal fold; M.11.61mm, F.10.40mm. 13) Transvers diameter of the vocal fold; M.18.62mm, F.18.27mm. 14) Distance from the upper margin of the epiglottis to the vocal fold; M.42.45mm, F.34.52mm. 15) Anteroposterior length of the vocal fold; M.19.25mm, F.10.70mm.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.17 no.1
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• pp.53-55
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• 2006

Background and Objectives: The purposes of this study are to find out clinical causes, clinical characteristics and treatment outcomes in relation to anatomical location of laryngeal cyst. Subjects and Method: A retrospective study of medical records was carried out for 170 patients with cysts on vocal cord, epiglottis, vallecula, arytenoid and aryepiglottic fold. Results: There were 83 cases of epiglottic cysts, 41 cases of vallecular cysts, 35 cases of intracordal cysts, 3 cases of arytenoid cysts and 2 cases of aryepiglottic cysts. Laryngeal cysts were more common in men than in women, and the ratio between men and women was 2:1. The age of patients ranged from 7 to 90 years, with their average age being 52 years. The most common symptom was voice change at intracordal cysts and globus sensation at vallecular and epiglottic cysts. The most common cause of intracordal cysts were voice abuse. But other location of laryngeal cysts doesn't have common causes. The average size of cysts was 0.3cm at vocal cord, 1.43cm at epiglottis, 1.4cm at vallecula, 0.9cm at arytenoid and 1cm at aryepiglottis. Recurrence was observed in 7 cases from 1 months to 18 months following the operation. Size of all recurred cysts was over the average. Conclusion: Physicians should be aware of changes in clinical patterns of laryngeal cysts according to location and have long follow-up period at large cysts after operation.

• Journal of Korean Medical classics
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• v.26 no.4
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• pp.71-87
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• 2013

Subject : The physiological characteristic of Eight Extra Meridians. Objective : This study research physiological characteristic of Eight Extra Meridians that differentiate from the physiological characteristic of Twelve Regular Meridians. Method : First, we researched the meaning of "There are Eight Extra Meridians and they don't be arrested by Twelve Regular Meridians" in Nanjing 27Nan compared with the contents of regular Meridians circulation in Huangdineijing. Second, we studied on the origin of Eight Extra Meridians and researched their route. Third, from these researches we drew some physiological characteristics of Eight Extra Meridians. Conclusion : In Huangdineijing, the regular Meridians circulation include the route of Governor Meridian, Conception Meridian, and Heel Meridian. So the sentence in Nanjing 27Nan is contradictory to the contents of Huangdineijing. The origin of Eight Extra Meridians could be found in Huangdineijing. The collateral Meridians of the Uterus and Epiglottis Meridian are specifically formulated to supplying for the Uterus or Epiglottis. Eight Extra Meridians have third qualities of Meridian, collateral Meridian, and the solid viscera keep the Essence Gi, so named 'Extra'. And they have an intimate association with Extraordinary Organs. They place at the middle axis of human body, thus do higher physiological function that control and regulate the function of Twelve Regular Meridians and Five Viscera & six Bowels for adaptation to the environment.