• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.16 no.1
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• pp.15-18
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• 2005

Background and Objectives : To determine the changes of reflux symptoms and laryngoscopic findings of patients with laryngopharyngeal reflux (LPR) on the duration of proton pump inhibitor medication. Materials and Methods : From Feb 2003 to Nov 2004, 58 patients who were diagnosed with LPR by 24-hour double-probe pH monitoring were enrolled. All patients were treated with proton pump inhibitor and followed up for 8 weeks at least. The response of symptoms and laryngoscopic findings of patients were assessed with reflux symptom index (RSI) and reflux finding score (RFS) before treatment and 2, 4, 8, 12, 16, 20 weeks after treatment. Results : The symptoms of patients with LPR were improved significantly at 2, 4, 8 weeks of treatment. The laryngoscopic findings of patients with LPR were improved significantly at 4 and 12 weeks of treatment. There was no correlation between improvement of reflux symptoms and laryngoscopic findings. Conclusions : The laryngoscopic findings of LPR patients were improved more slowly than reflux symptoms. Based on our results, anti-reflux therapy might be continued at least for 3 months until the improvement of laryngoscopic findings.

• Korean Journal of Otorhinolaryngology-Head and Neck Surgery
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• v.61 no.11
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• pp.619-623
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• 2018

Mucosal bridges of vocal fold have been described as a parallel band to vocal folds with the presence of sulcus vocalis. However, the type of mucosal bridge crossing each vocal fold has not been well documented in the literature. Herein, we present two cases of mucosal bridge found in the vocal fold connecting the mid-portions of true vocal folds. Two patients who had no history of laryngeal trauma, surgery or oro-tracheal intubation visited our clinic due to voice change. Laryngoscopic examination revealed that they had a mid-portion mucosal band without any other mucosal lesions. Two patients underwent laryngomicrosurgery with pulsed dye laser. After the surgery, they showed significant improvement of voice quality.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.28 no.2
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• pp.141-143
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• 2017

Pleomorphic adenoma is the most common salivary gland neoplasm and most of them arise in the parotid gland. Pleomorphic adenomas at other sites than salivary glands have rarely been reported. We experienced a patient with pleomorphic adenoma of larynx. A 59 year-old female patient visited outpatient clinic complaining of voice change and foreign body sensation. Round mass at right vocal process was found in laryngoscopic exam. We performed laryngoscopic microsurgery to remove the tumor. Histologically, it was diagnosed as pleomorphic adenoma. Recurrence or complication did not occur during the follow up period of 3 years.

• Medical Lasers
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• v.9 no.1
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• pp.79-83
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• 2020

This paper reports a case of type 1 posterior glottic stenosis in a 60-year-old woman that was misdiagnosed as bronchial asthma. The patient was intubated at another hospital after ingesting herbicide and extubated seven days later. Although her voice changed, she had not received treatment at that time. She visited a local internal medicine clinic when her condition deteriorated to the point of dyspnea, but several months of treatment for bronchial asthma failed to improve her symptoms. Upon admission to the author's hospital, a laryngoscopic examination revealed a type 1 posterior glottic stenosis, which was removed surgically using a CO₂ laser.

• Journal of Korea Multimedia Society
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• v.25 no.5
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• pp.661-669
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• 2022

The purpose of this study is to compare and analyze Deep Learning (DL) and Digital Image Processing (DIP) techniques using the results of the glottis segmentation of the two methods followed by the quantification of the asymmetric degree of the vocal cord mucosa. The data consists of 40 normal and abnormal images. The DL model is based on Deeplab V3 architecture, and the Canny edge detector algorithm and morphological operations are used for the DIP technique. According to the segmentation results, the average accuracy of the DL model and the DIP was 97.5% and 94.7% respectively. The quantification results showed high correlation coefficients for both the DL experiment (r=0.8512, p<0.0001) and the DIP experiment (r=0.7784, p<0.0001). In the conclusion, the DL model showed relatively higher segmentation accuracy than the DIP. In this paper, we propose the clinical applicability of this technique applying the segmentation and asymmetric quantification algorithm to the glottal area in the laryngoscopic images.

• 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.19 no.1
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• pp.5-10
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• 2013

Bilateral vocal cord palsy (BVCP) present a challenging condition which result from various etiologies including iatrogenic recurrent laryngeal nerve injury, progressive neurological disorder, intubation, trauma, tumor and idiopathic cause. Careful history taking, laryngoscopic evaluation, laryngeal EMG, and imaging studies are helpful for providing a precise diagnosis and planning appropriate treatment. BVCP causes airway restriction and not vocal dysfunction. In patients with BVFP, treatment is directed at maximizing the airway, while attempting to limit the negative effects of treatment on vocal function. A variety of surgical procedures are available for mangement of BVCP. The most conservative, limited procedure should be selected initially, and then further surgery and more extensive surgery can be tailored to the patient's airway and voice needs. This review will address the etiology, diagnosis, and managements of BVCP.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.31 no.2
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• pp.78-82
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• 2020

Inverted papilloma is a rare benign tumor which usually arises from sinonasal mucosa. We experienced a case of 62-year-old male who presented with foreign body sensation in throat. A round mass was found at right false vocal cord in laryngoscopic examination. It was excised in laryngeal microsurgery. The pathologic diagnosis was inverted papilloma of false vocal cord. Recurrence or complication did not occur during the follow up period of three months.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.16 no.2
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• pp.146-151
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• 2005

Objectives: Prospective study of quality of life in patients underwent microlaryngeal surgery for dysphonia was performed. Materials and Methods : 51 patients with dysphonia took part in the study, and patients with malignancies or functional voice disorder were excluded. Patients were asked to complete the SF-36 questionnaire before surgery and within 6-12 months after surgery. Preoperative and postoperative SF-36 scores were compared with data on 46 age-matched healthy controls. Results The most of SF-36 subscale scores showed significantly improvement after surgery, except of PF (physical functioning) and MH (mental health). Preoperative scores had significantly poorer than the normal controls on 6 subscales, but there is no statistically significant differences between postoperative scores and normal controls on 5 subscales. Conclusion In the study, patients with organic voice disorder show improvement in quality of life after microlaryngeal surgery.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1982.05a
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• pp.8.2-8
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• 1982

Hoarseness is the change of voice quality which represents the abnormal function of phonation and is the main symtom of the laryngeal diseases. The etiology of hoarseness are known more than 50 causes, among them, viral upper respiratory infection is the main cause of hoarseness and the laryngeal nodule and polyp, laryngeal paralysis, laryngeal cancer, laryngeal papilloma and the laryngeal tuberculosis are the other causes of hoarseness in that order. Recently, the authors experienced 4 cases of uncommon etiology of hoarseness, so we present the cases with the brief review of literatures. Case 1. 29 years old male Admitted in Dept. of neurosurgery due to Traffic Accident. He had a trauma on the anterior neck. Hoarseness was developed on 1 month after the accident. Laryngoscopic finding; Paramedian paralysis of left vocal cord. Displacement of left arytenoid cartilage. Case 2. 53 years old male Admitted in Dept. of General Surgery due to Clonorchis Sinensis, under the general endotracheal anesthesia, Choledochostomy was performed. Laryngoscopic finding; Median paralysis of left vocal cord. Case 3. 56 years old male Admitted in Dept. of Internal Medicine due to Aortic Aneurysm. Hoarseness was developed on 3 months prior to admission. Laryngoscopic finding; Intermediated position paralysis of left vocal cord. Displacement of left arytenoid cartilage. Case 4. 74 years old male Admitted in Dept. of Internal Medicine due to Bronchogenic carcinoma. Hoarseness was developed on 3 years prior to admission. Laryngoscopic finding; Paramedian paralysis of right vocal cord.