• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.8 no.2
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• pp.235-238
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• 1997

Laryngeal saccular cyst may develop when obstruction of the orifice of the saccule occurs with resultant dilatation of saccule. It is classified into anterior saccular cyst and lateral saccular cyst. When saccular cyst occurs in infancy, it usually may cause respiratory distress, inspiratory stridor, cyanosis and dysphagia. In adults, it may cause hoarseness, dyspnea, dysphagia, pain and neck mass. The laryngeal saccular cyst may be treated by its removal with endoscopic or external approach, depending on the classification of saccular cysts, its size and individual patient factor. Recently, we have experienced a case of laryngeal saccular cyst so we report our clinical experience with brief review of literature.

• Journal of Veterinary Clinics
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• v.35 no.2
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• pp.57-59
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• 2018

A seven-month-old Hanwoo steer was presented immediately after transport with respiratory symptoms including a nasal discharge, depression, and anorexia. Though repeated treatments, bronchopneumonia had not been improved and had persisted for 10 months. Then, obstructive breath sound was heard. A cyst adjacent to the epiglottis could be observed with respiratory endoscopy. Consequently, chronic bronchopneumonia induced laryngeal cyst formation, resulting in obstructive dyspnea. And respiratory endoscopy may be useful for differentiating the causes of dyspnea in bovine clinical practice.

• 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.

• Korean Journal of Bronchoesophagology
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• v.17 no.2
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• pp.108-111
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• 2011

Epiglottic cysts cause stridor mimicking asthma and hinder intubation in surgery. A huge cyst can obstruct the airway, making laryngeal examinations impossible. Before surgery, complete visualization of the larynx is necessary for the successful excision of a cyst. If laryngeal examination fails, computed tomography (CT) scanning can provide detailed information. Virtual endoscopy based on CT data reconstruction can yield a detailed three-dimensional image of the larynx. Here, we report two cases of epiglottic cysts along with virtual endoscopic findings and surgical photographs.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.24 no.1
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• pp.47-50
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• 2013

Background and Objectives:The purpose of this study is to find features in acoustics and to learn useful features of parameters in order to distinguish laryngeal diseases through many acoustic variables. Materials and Methods:The subjects of this study were 125-male patients who had been diagnosed with vocal nodule, vocal polyp, vocal cyst, Reinke's edema, leukoplakia. To research the features of each disease in acoustics, they are measured 34 parameters by using MDVP. Results:It is clear that in order to see a meaning result when distinguishing laryngeal diseases, $F_0$, $MF_0$, $T_0$, Fhi, Flo, PER variables are significant (p<.05). It means that variables related to fundamental frequency are important to anticipate which group will be diagnosed with Reinke's edema and leukoplakia. vAm had an effect on getting a significant result in terms of amplitude perturbation parameters, which is useful to distinguish between laryngeal polyp/cyst and other laryngeal disease (p<.05). ATRI made a significant result in related to tremor parameters, which is useful to distinguish between laryngeal polyp and other laryngeal disease (p<.05). Conclusion:$F_0$, $MF_0$, $T_0$, Fhi, Flo, PER, vAm, ATRI might be meaningful parameters distinguishing pathologic from benign laryngeal diseases. Especially, the vAm and ATRI are an important factor when forecasting which group would be diagnosed with vocal polyp.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.27 no.1
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• pp.40-44
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• 2016

Background and Objectives : Surgery is considered the primary treatment for intracordal cyst. However, patients who had undergone surgery are still subject to recurrence and continued voice changes. Intracordal cysts naturally disappear in some patient population. Cyst does not always recur in patients who had received partial surgical removal, too. Contradicting results raises a question whether complete surgical removal of intracordal cyst is necessary and demonstrate need for better treatment. Herein, the author proposes novel surgical method technique intralaryngeal needle technique (INT), a technique using surgical needle for not only injection but also for aspiration and excision of cyst. This study aims to examine the potential of intralaryngeal needle technique in treating intracordal cysts. Materials and Methods : Surgical procedures were done on in-patients diagnosed with intracordal cyst. 23 patients received follow-up screening after the surgery for one year. Patients' subjective satisfaction levels, acoustic measures, aerodynamic measures, laryngeal stroboscopic results were compared before and after the treatment. Results : Overall patients were satisfied with novel surgical excision method. In terms of aerodynamic measures, maximum phonation time, mean air flow rate improved after the surgery. In terms of acoustic measures, Jitter, Shimmer, NHR, and voice pitch changes after the treatment showed statistically significant differences. Laryngeal stroboscopy results showed significant decreases in cyst sizes. Post-surgery patients had improved mucosal waves and amplitudes values. Conclusion : The results show the validity of intralaryngeal needle technique in reducing intracordal cyst size by excision, aspiration, and injection. The author believes this novel technique can be used as an alternative surgical method for intracordal cysts.

• Korean Journal of Bronchoesophagology
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• v.4 no.2
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• pp.159-164
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• 1998

The developmental and subsequent addition of laser technology to existing surgical techniques offered new and exciting Possibilities for improving traditional endoscopic operations and expanding the scope of the specialty of otolaryngology-head and neck surgery. Lasers were found to be Precise, but potentially dangerous, surgical instruments whose use was associated with certain distinct and unprecedented advantages, but also with many unique and potentially serious, and sometimes catastrophic complications. The Purpose of this study was to evaluate the of elation technique of $CO_2$laser, kinds of anesthesia, equipments of operating room, and education of medical staff. Four hundreds 4 cases of $CO_2$laser laryngeal microsurgery were reviewed for the safety of $CO_2$laser in laryngeal microsurgery. Vocal polyp (46,3%) was the most common pathology in our cases. The others were vocal nodule, Reinke`s edema, epiglottic cyst, laryngeal granuloma, laryngeal papilloma, intracordal cysts, laryngeal tuberculosis, laryngeal web, laryngotracheal stenosis, and laryngeal cancer. Following complete equipment controls, treatment area controls, maintenance, service and procedural controls, personel protective equipment, and warning signs, no complications were found in our cases. In conclusion, laryngeal microsurgery with $CO_2$laser could be done safely without complication if complete preoperative preparation and education of medical staff preceded.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.22 no.1
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• pp.60-62
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• 2011

Primary laryngeal aspergillosis is rare, It is most often found in immunocompromised patient, such as leukemia, malignant disease, diabetes or immunosuppressive drugs. These days the occurrences of laryngeal aspergillosis in immunocompetent patients are increasing. The cause of laryngeal aspergillosis in immunocompetent patients is not clear, but a few factors are considered such as iatrogenic factors, vocal abuse, vocal fold cyst and occupational factors. The histopathologic characteristics are somewhat different between that of immunocompromised patients and immunocompetent patients. We report a case of primary vocal cord aspergillosis in immunocompetent patient who had treated with only surgery and brief review of the pertinent literature.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.19 no.2
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• pp.142-145
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• 2008

Background and Object: The aim of this study is to evaluate the change of patient's subjective voice handicap index (VHI) and acoustic parameters before and after laryngeal microsurgery for benign vocal cord disease. Materials and Method: We analyzed 78 patients who received laryngeal microsurgery for benign vocal cord disease from January 2004 to February 2007 retrospectively. There were 28 vocal polyp, 40 vocal nodule, 5 intracordal cyst and 5 Reinke's edema. Jitter, shimmer, harmony to noise ratio (HNR) were analyzed before surgery and 2-3months after surgery using the Doctor's speech science program. The voice handicap index introduced by the Pittsburgh Voice Center was used to examine patient's subjective change of voice quality. Results: Acoustic parameters of jitter, shimmer and HNR were improved in patients with vocal polyp and vocal nodule after surgery. The acoustic parameters were not improved in patients with Reinke's edema, statistically. Only jitter was improved significantly in patients with intracordal cyst (p<0.05). The VHI was significantly improved after surgery. The change of jitter and shimmer was significantly correlated with the change of VHI after surgery. Conclusion: The acoustic parameters and VHI were significantly improved in patients with benign vocal disease after laryngeal microsurgery.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1977.06a
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• pp.7.3-8
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• 1977

In the ENT fields, epidermoid cysts occur infrequently in the oral region and often situated on the floor of the mouth or the submental region. Moreover, epidermoid cyst on the laryngeal surface of the epiglottis occurs rarely. Authors experienced a case of epiglottic epidermoid cyst and treated successfully by transhyoid pharyngotomy approach and marsupialization. It was 46 years old male patient who has been suffered from intermittent sorethroat for 2 years prior to admission, hoarseness for 2 months and dyspnea for 1 month. Indirect laryngoscopy revealed a pigeon egg-sized, round, smooth tumor mass on the laryngeal surface of the epiglottis which had soft consistency on digital examination. Biopsy proved epidermoid cyst. Marsupialization of the cyst by transhyoid pharyngotomy approach was performed and the postoperative course was uneventful.