• Journal of Korean Neurosurgical Society
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• 제56권2호
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• pp.152-156
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• 2014

Intracisternal accessory nerve schwannomas are very rare; only 18 cases have been reported in the literature. In the majority of cases, the tumor origin was the spinal root of the accessory nerve and the tumors usually presented with symptoms and signs of intracranial hypertension, cerebellar ataxia, and myelopathy. Here, we report a unique case of an intracisternal schwannoma arising from the cranial root of the accessory nerve in a 58-year-old woman. The patient presented with the atypical symptom of hoarseness associated with recurrent laryngeal neuropathy which is noted by needle electromyography, and mild hypesthesia on the left side of her body. The tumor was completely removed with sacrifice of the originating nerve rootlet, but no additional neurological deficits. In this report, we describe the anatomical basis for the patient's unusual clinical symptoms and discuss the feasibility and safety of sacrificing the cranial rootlet of the accessory nerve in an effort to achieve total tumor resection. To our knowledge, this is the first case of schwannoma originating from the cranial root of the accessory nerve that has been associated with the symptoms of recurrent laryngeal neuropathy.

• 대한후두음성언어의학회지
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• 제16권1호
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• pp.76-80
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• 2005

Although primary neuroendocrine carcinomas(NEC) are uncommon tumors of the larynx, they represent the most common nonepidermoid malignancy of this organ. Whereas typical carcinoid tumors and small-cell carcinomas occur very rarely in the larynx, the majority of laryngeal NEC belong to a broad intermediate group between these two extremes of NEC. Through many case studies, a major protion of clinicopathologic characteristics of laryngeal NEC have been revealed; however, the gistogenesis of laryngeal NEC is still unknown. The only well-documented normal neuroendocrine structures of the larynx are paraganglions, but the incidence of laryngeal paragangliomas are much lower than that of NEC. Here, we report on three cases of NEC affecting the larynx and the results of searching for neuroendocriene cells in non-neoplastic larynx tissue.

• 대한후두음성언어의학회지
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• 제16권1호
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• pp.19-22
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• 2005

Background and Objectives : While considerable progress has been made in enhancing the quality of laryngoscopy and image processing, the evaluation of laryngeal erythema is still based on the clinician's judgement. The purpose of this study is to quantitatively measure the degree of erythema and to examine the relationship with clinical grading. Materials and Methods : Color images of larynx from 100 subjects were captured from video-documented examinations of laryngoscopy. The amount of erythema within the digitized larynx image was quantified using software developed and was compared with a grading system (0 to 3 scale) based on visual inspection by 4 experienced clinicians. The results were compared by deriving Kappa, Kendall and Spearman statistic. Results : There was high intra-observer(R=0.402-0.755) and inter-observer correlation (R=0.789). Among parameters, the red composite value had most remarkable agreement with clinical grading(R=0.827). Conclusion : The result suggest that the computer based analysis of laryngeal erythema can provide quantiative data on degree of erythema and the basis for further development of an expert system.

• 대한후두음성언어의학회지
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• 제24권2호
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• pp.118-121
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• 2013

Primary lymphoma of the larynx is rare, accounting for less than 1% of all laryngeal neoplasm. Early symptoms are ambiguous and nonspecific, and confirmation of the diagnosis is often difficult. The aim of this study was to report the experience of our department in the management of these aggressive lesions, as they require special diagnostic and therapeutic attention. We enrolled 3 patients who diagnosis of lymphoma involving the larynx were retrospectively reviewed. The histopathological diagnosis revealed 1 case of diffuse large B cell lymphoma, and 2 case of NK-T cell lymphoma. Details of the presentation, diagnostic procedures, treatment, and outcome of these patients were presented. Primary laryngeal lymphoma is a rare entity. Early symptoms are subtle and nonspecific, and confirmation of the diagnosis is often difficult. Because of the rarity of this tumor type, the optimal management remains controversial and it seems that should be managed not as a distinct disease entity but as an unusual presentation of non-Hodgkin lymphoma, according to the recent treatment trends.

• 대한후두음성언어의학회지
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• 제27권2호
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• pp.122-125
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• 2016

Although many factors associated with difficult intubation have been known, predictors of difficult mask ventilation are not well known. We experienced a case of nearly complete airway obstruction following usual anesthetic induction which needed various emergency treatments. The patient had a preoperative diagnosis of contact granuloma of right posterior vocal cord and bilateral vocal cord palsy but later was found out as invasive laryngeal cancer. Upon the surgical field of view, both vocal cords were showing significantly thickened and fixated appearance and was considered as in the critical narrowing state with the potential of complete obstruction. Using $C-MAC^{(R)}$ video laryngoscope we were able to see the narrowed vocal cord and choose proper size of endo-tracheal tube. Consequently, intubation was successfully done and operation was conducted. From this case, we have lessons that physicians should examine the patient's airway more carefully in case of laryngeal mass and prepare emergency measures.

• 말소리와 음성과학
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• 제9권3호
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• pp.57-65
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• 2017

The current study explored how Korean-speaking children processed the multiple acoustic cues (VOT and f0) for the stop laryngeal contrast (/t'/, /t/, and /$t^h$/) and examined whether individual perceptual strategies could be related to a general cognitive ability performing executive functions (EF). 15 children (aged from 7 to 8) participated in the speech perception task identifying the three Korean laryngeal stops (3AFC) on listening to the auditory stimuli of C-/a/ with synthetically varying VOT and f0. They completed a series of EF tasks to measure working memory, inhibition, and cognitive shifting ability. The findings showed that children used the two cues in a highly correlated manner. While children utilized VOT consistently for the three laryngeal categories, their use of f0 was either reduced or enhanced depending on the phonetic categories. Importantly, the children's processing strategies of a f0 suppression for a tense-aspirated contrast were meaningfully associated with children's better cognitive abilities such as working memory, inhibition, and attentional shifting. As a preliminary experimental investigation, the current research demonstrated that listeners with inefficient processing strategies were poor at the EF skills, suggesting that cognitive skills might be responsible for developmental variations of processing sub-phonemic information for the linguistic contrast.

• Journal of Chest Surgery
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• 제24권1호
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• pp.98-105
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• 1991

There have been reports concerning the association of laryngeal carcinoma and lung cancer. Second primary respiratory tract malignancies occur frequently in patients who have undergone the treatment of laryngeal cancer probably because they are exposed to the same carcinogen. Recently, we have experienced two patients who developed second primary lung cancer 30 and 41 months after the first diagnosis of laryngeal cancer at the Department of Thoracic & Cardiovascular Surgery, Yonsei University College of Medicine. Relative long interval between the two carcinomas indicated metastasis unlikely. From a therapeutic standpoint, it is of great importance that they should be regarded as separate primaries and not as metastasis. Longevity will depends on a presumption that the lesions are separate primaries and the status of stage at the time of detection of second primary lesion. The follow-up of patients who are seen with carcinomas of the head and neck should be done at regular interval and include a chest roentgenogram and cytologic examination of sputum to detect early changes before the tumors becomes incurable. The first 76 year old patient with left upper lobectomy due to the T2N0M0 lung cancer has been in good condition to present. But the second 55 year old patient with right pneumonectomy due to the T2N0M0 lung cancer died of respiratory failure and septic pneumonia 3 months after operation and chemotherapy.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1979년도 제13차 학술대회 연제순서 및 초록
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• pp.9.5-9
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• 1979

후두에 발생한 신경성종양은 극히 드물 질환이며 신경초종 혹은 신경섬유종이 나타난다. 현재까지 약 100례 이하의 신경성종양의 보고가 있으며 이들중 신경섬유종양과 동반된 예는 20례에 불과하다. 주 증상으로는 호흡곤란, 발성장애와 언어장애등이 있으며 어느 연령에나 발생할 수 있다. 저자들은 2례의 후두의 신경섬유종을 보고하고자 한다. 증례 1은 선천성후두신경섬유종으로 2개월된 남아는 생후즉시로 부터 심한 호흡곤란과 발성장애가 있었으며, 증례 2는 28세의 여자에서 다발성신경섬유종증(von Recklinghausen's disease)에 동반하여 후두에 신경섬유종이 발생한 예이다. 본 논문에서 자자들은 증례보고와 함께 문헌고찰을 하고자 한다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1983년도 제17차 학술대회연제순서 및 초록
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• pp.14.2-14
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• 1983

후두외상의 손상은 그 정도나 범위에 따라 차이는 인지만 주요 후유증으로는 기도폐쇄, 부종, 주위조직의 봉와직염 및 농양, 누공, 후두연골 및 연골지막염, 만성 후두협착, 성대마비, 기관발거곤란증, 성음장애 등을 들 수 있고, 일반적인 후두외상의 치료방법은 일차적으로 신속한 기도유지를 위한 처치를 한 다음 상기각 후유증에 따르는 이차 시술을 시행하는 것이 보통이다. 최근 저자들은 교통사고로 인한 후두부 및 경부의 폐쇄적 외상으로 갑상연골 골절과 좌측 성대마비, 연하장애 및 우측 쇄골 골절을 보인 환자에게서 갑상연골 정복술을 시행 후 술후 2개월에 상기 증세의 호전을 보인 예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

• 대한후두음성언어의학회지
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• 제31권1호
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• pp.1-6
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• 2020

In unilateral vocal fold paralysis (UVFP) patients, we try to improve their symptoms such as hoarseness or aspiration by restoring nerve functions or medialization laryngoplasty (ML), etc. Until now, ML (thyroplasty and/or arytenoid adduction) is considered as gold standard of treatment for UVFP. However, if recurrent laryngeal nerve (RLN) is damaged and use of RLN is feasible during operation, laryngeal reinnervation (LR) would be a good option. Anastomosis with ansa cervicalis to RLN is most common reinnervation method. Delayed LR may be considered in young patients when the RLN denervation period is not long (less than 2 years) for the treatment of surgery-related UVFP. Injection laryngoplasty and laryngeal framework surgery showed great voice outcomes in UVFP. Combination therapy (neuromuscular pedicle innervation with ML) also showed good post-operative voice outcomes even in longer periods (over 2 years). In pediatric patients, LR would be considered as a good treatment option because all procedures need to general anesthesia.