• 대한두경부종양학회지
• /
• 제28권2호
• /
• pp.118-121
• /
• 2012

Backgrounds : To evaluated the use of FDG PET/CT for the identification of extracapsular spread(ECS) with histologic correlation in laryngeal cancer. Methods : We reviewed 79 medical records of patients who underwent of FDG PET/CT for laryngeal cancer before surgery. Results : ECS was present in 41.9%(18/43) dissected necks and in 34.5%(20/58) dissected cervical levels. There was a significant difference in the SUVmax between cervical lymph nodes with ECS and without ECS($6.39{\pm}4.53$ vs. $1.19{\pm}1.64$, p<0.001). The cut-off value for the SUVmax for differentiating with ECS from without ECS was 2.8 with the sensitivity of 85.7% and the specificity of 85.6%. Conclusion : The median SUVmax cut-off values of FDG PET/CT higher than 2.8 was associated with greater risk cervical lymph node metastasis with ECS in patients with laryngeal cancer.

• Asian Pacific Journal of Cancer Prevention
• /
• 제14권9호
• /
• pp.5301-5310
• /
• 2013

The biological mechanisms of cancer and associations with behavior of tumours need to be studied to understand progression and determine appropriate treatments. Here we investigated expression of VEGF, MMP-9 and E-cadherin in laryngeal SCCs and their relations with clinical behavior. This prospective study was based on 38 surgical specimens from patients with primary laryngeal SCC and data recorded in their cards. Expression of the three factors in tumor tissue was examined using immunohistochemistry and correlations with clinical parameters of primary tumors, regional lymph node metastases, stage of disease, histopathologic differentiation, and vascular/cartilage invasion were investigated. Regarding the cases with positive MMP-9 expression, the difference between well and moderately/poorly differentiated tumors was statistically significant. However, differences between early stage (stage I and II) and late-stage (stage III and IV) tumours, and between positive and negative for pLN metastasis were not. No significant relationship between positive VEGF and tumor differentiation or stage was apparent, but E-cadherin levels significantly differed between well and moderately/poorly differentiated tumours and with the presence of pLN metastasis. E-cadherin staining did not vary between MMP-9 positive and negative cases. In conclusion, MMP-9 may be a negative predictor of differentiation in laryngeal SCC, while E-cadherin is a predictor of differentiation and nodal metastases. Even if the difference between VEGF expression and tumor stage was not statistically significant, it seems that there exists some relationship, which might be clarified with a greater number of cases.

• 대한후두음성언어의학회지
• /
• 제29권2호
• /
• pp.98-102
• /
• 2018

Background and Objectives : Detection of vascular abnormalities in vocal cord (VC) leukoplakia is important for the diagnosis of neoplastic change of the mucosa. The aim of this study was to investigate the value of i-scan in the differential diagnosis of VC leukoplakia based on visualization of abnormal vascular features. Material and Methods : Fifty-two patients with leukoplakia were enrolled in the study. Images of their larynx obtained using conventional white light endoscopy and an i-scan-enhanced endoscopy (Pentax DEFINA EPK-3000 Video Processors, with Pentax VNLJ10) were reviewed. The microvascular features of the lesions and vascular changes were analyzed and the results were compared with the histopathologic diagnosis. Results : Among the 52 leukoplakia patients, 7 (13.5%) patients had squamous hyperplasia, 10 (19.3%) mild dysplasia, 2 (3.8%) moderate dysplasia, 14 (26.9%) severe dysplasia, 4 (7.7%) carcinoma in situ, and 15 (28.8%) invasive squamous cell carcinoma on histopathologic examination. Using i-scan-enhanced endoscopy, abnormal vascular change with neoplastic neoangiogenesis was detected in most cases of malignant VC lesion [severe dysplasia : 9/14 (64.3%), carcinoma in situ: 2/4 (50.0%), and invasive squamous cell carcinoma : 11/15 (73.4%)]. Conclusion : i-scan-enhanced endoscopy is a useful optical technique for the diagnosis of VC leukoplakia. Our results suggest that i-scan may be a promising diagnostic tool in the early detection of laryngeal cancer.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권5호
• /
• pp.2439-2443
• /
• 2016

Purpose: To determine the risk factors, clinical symptoms and patterns of spread in laryngeal cancer. Materials and Methods: A cross sectional study was carried out in the Regional Cancer Centre, Imphal, Manipur, India. One hundred and sixteen patients with laryngeal cancer were retrospectively reviewed for epidemiological data and descriptive statistics were reported for various variables. Results: Median age at presentation was 65 years and 32.8% were undernourished at presentation. The male to female ratio was 5.4:1. Heavy smoking and tobacco chewing was associated in 91.4% and 33.6% of patients respectively. Tracheostomy was required in 21.5% leading to diagnosis of laryngeal cancer. Almost all were squamous cell carcinoma with neuroendocrine and verrucous carcinoma accounting for less than 2%. Supraglottic, glottic and trans-glottic tumors were 56.9%, 36.3% and 6.9% respectively. Nodal metastases were seen in 81.8% of supraglottic cancers and 31.6% of glottic cancers with supraglottic involvement. Level II neck nodes were the commonest site followed by level III. Distant metastases (only liver) were apparent in 1.7% at presentation. Including these liver metastases, unresectable cases were limited to 6% of the patients. Conclusions: Tobacco use is implicated in almost all of the cases and the sex ratio has also decreased due to increased female smokers. The supraglottis remains the commonest site and incidence of nodal metastases is higher than in other countries. There is also a higher requirement for tracheostomy at presentation in this region.

• 대한후두음성언어의학회지
• /
• 제28권2호
• /
• pp.144-147
• /
• 2017

Laryngeal neoplasm is the second most common malignancy of the upper aerodigestive tract. About 85% to 95% of laryngeal malignancies are squamous cell carcinoma that arises from the epithelial lining of the larynx. The exact cause of laryngeal neoplasm is unknown, but certain risk factors can affect the chances of developing it. Chronic inflammation is a mutagen factor confirmed in the carcinogenesis of various tumor. Inhalation injuries cause histopathologic damage to laryngeal mucosa and inflammation change. This long term inflammation may leads to the development of dysplasia and malignant transformation. Recently, we experienced a case of malignant transformation of laryngeal mucosa after inhalation injury patient 25 years ago. Herein, we reported this rare case and review the relevant literature.

• Radiation Oncology Journal
• /
• 제38권1호
• /
• pp.11-17
• /
• 2020

Purpose: Definitive radiotherapy remains a primary treatment option for early stage glottic cancer. Intensity-modulated radiation therapy (IMRT) has emerged as the standard treatment technique for advanced head and neck cancers, whereas three-dimensional conformal radiotherapy (3D-CRT) has remained standard for early glottic cancers. We used the National Cancer Database (NCDB) to identify predictors of IMRT use and effect on outcome in these patients. Materials and Methods: We queried the NCDB from 2004-2015 for squamous cell carcinoma of the glottic larynx staged Tis-T2N0 treated with radiation alone. Logistic regression was used to identify predictors of IMRT. Cox regression was used to identify factors predictive of overall survival. Propensity matching was conducted to account for indication bias. Results: We identified 15,627 patients, of which 11% received IMRT. IMRT use rose from 2% in 2004 to 16% in 2015. Predictors of IMRT include: increased comorbidity, T2 stage, urban location, chemotherapy, treatment at an academic center, and later treatment year. Predictors of improved survival were female gender, higher income, lower stage, no chemotherapy, academic facility, and more remote year. There was no difference in survival between 3D-CRT and IMRT across all stages. Conclusions: The rate of IMRT use for early stage glottic laryngeal cancer has increased over time. There was no difference in outcome in patients receiving IMRT versus 3D-CRT across the cohort.

• 대한기관식도과학회지
• /
• 제4권1호
• /
• pp.91-95
• /
• 1998

Background： Laryngeal cancer, the most common malignancy of head and neck, is being detected and treated in earlier and more effectively due to introduction of endoscope, continuous development of radiographic technology, and advancement in new surgical techniques such as laser surgery and conservation laryngeal surgery Objectives To compare the different treatment results for early laryngeal cancer to determine which methos provides the good prognosis. Materials and Methods： Retrospective study was done for 135 patients with early laryngeal squamous cell carcinoma(Stage I or II) who were treated at our institute between 1989 to 1996. There were 105 patients with glottic cancer(Stage I: 68 patients, Stage II：37 Patients) and 30 patients with supraglottic cancer(Stage I: 12 patients, Stage II：18 patients) Initial treatment included radiation therapy for 54 patients, endoscopic laser surgery for 8 patients, laryngofissure and cordectomy for 8 patients, vertical partial laryngectomy for 37 patients, supraglottic laryngecomy for 14 patients and supracricoid laryngectomy for 5 patiens, and total laryngectomy for 9 patients. Results : Salvage treatments, such as total laryngectomy, conservation laryngeal surgery, radiation therapy and neck dissection were performed for initial treatment failure with 9 patients after radiation therapy, 8 patients after conservation laryngeal surgery, 2 patients after endoscopic laser and 3 patients after total laryngectomy. Overall 3-year survival rate for glottic 71 was 92.4%, glottic f 84.3%, supraglottic 7172.7%, and supraglottic f was 63.%%. However, survival rate of the same stage was variable according to the choice of initial treatment. Conclusion New classification of the early laryngeal cancer was necessary and helpful for the choice of the initial treatment.

• 대한두경부종양학회지
• /
• 제33권2호
• /
• pp.29-33
• /
• 2017

Verrucous carcinoma was first described by Ackerman who reported a case of verrucous carcinoma of the oral cavity. While it is primarily occurred in oral cavity, larynx is the second most affected site, accounting for nearly 35% of cases. It is a rare variant of well-differentiated squamous cell carcinoma and comprises 1% to 4% of all laryngeal carcinomas. It is characterized by locally invasive, slow growth and the surface shows papillary fronds with prominent hyperkeratosis. Because of the benign appearance and difficulty of the tissue diagnosis, it is often undiagnosed or misdiagnosed. The primary treatment modality is surgery and the extent of surgical resection may be guided by T stage. We experienced a case of verrucous carcinoma of larynx in a patient with hoarseness lasted for about 2 years and had difficult to diagnosis and treatment. Therefore we report this case with a brief review of literature.

• 대한기관식도과학회:학술대회논문집
• /
• 대한기관식도과학회 1982년도 제16차 학술대회연제순서 및 초록
• /
• pp.6.1-6
• /
• 1982

후두유두종은 17세기 Warcellus Dohalus에 의해 Warts of throat로 처음 소개된 이래 후두의 가장 흔한 양성종양으로 알려져 왔으며 조직학적으로는 양성이나 병변의 위치, 병변의 다발성, 고도의 재발성 및 치료의 곤란으로 임상적인 면에서 많은 문제점이 있다. 후두유두종은 경우에 따라서는 자연치료도 가능한 반면 악성변화를 일으킬 수 있다고도 알러져 있는데 그 빈도는 악성변화가 전혀 없다고 주장하는 보고자부터 26.0%에 이르기까지 많은 차가 있다. 저자들은 최근 편평세포암으로 악성변화를 일으켰던 후두유두종 2예를 경험하였기에 보고하는 바이다. 증예1은 58세의 남자로서 1980년 5 월 13 일 약 3연간의 애성을 주소로 부산학병원 이비인후과 외래로 내원하였다. 내원 당시 국소소견은 양측성대의 전반부 및 전연합에 백색의 후두종양 종물을 나타내었고 간접후두경하에서 생검을 실시하였던 바 후두유두종이었다. 동년 5월 29 일 입원하여 Suspension laryngoscopy하에 완전제거후 퇴원하였다. 퇴원시 5-FU 국소도포를 권유하였으나 특별한 치료를 받지 않고 경과 중 약 9개월 후인 동년 3월 5 일 애성의 악화와 경징한 호흡곤란이 있어 외래를 재방문하였는데 당시의 국소소견은 유두종양 종물이 양측 성대 및 성문하부에 까지 관찰 할 수 있었으며 직접후두경하에서 생검하여 편평세포암으로 진단되었다. 7 일 후 환자는 극심한 호흡곤란을 주소로 응급실로 내원하여 기관절개술을 받고 입원하였다. 동년 4월 7 일 후두전적출술을 시행하고 3주후 퇴원하여 방사선치료를 받고 현재까지 특별한 이상없이 생활하고 있다. 증예2는 47 세 남자로서 1978년 9월 27 일 애성 및 호흡곤란을 주소로 내원하였다. 내원 당시 국소소견은 좌측성대의 전반부에 백색의 빛나는 상실상의 종물이 인지되어 문접후두경하에서 생검을 실시한 결과 후두유두종이었다. 동년 10월 24 일 입원하여 기관절개술후 Suspension laryngoscopy 하에서 유두종을 제거하였으며 5-FU 국소도포를 62.5 mg씩 20회 총 1250mg을 사용하였고 esroge등을 투여하였으나 재발을 계속하였다. 동년 9월 9 일 심한 호흡곤란을 주소로 응급실로 내원하여 기관절개술을 시행한 후 생검을 시행한 결과 편평세포암으로 확진되어 동년 9월 29 일 후두전적출술을 시행하였다. 술후 25 일에 퇴원하여 현재까지 암의 전이 혹은 합병증의 발생없이 경과하고 있다.

• 대한두경부종양학회지
• /
• 제18권1호
• /
• pp.36-40
• /
• 2002

Background and Objectives: To determine if laser endoscopic microsurgery is a reliable and appropriate approach in the treatment of laryngeal carcinomas. Materials and Methods: Retrospective study of 62 patients treated with CO2 laser from June 1988 to November 2000 at Seoul National University Hospital for laryngeal squamous cell carcinoma. All patients were treated with curative intention. Fifty three untreated patients with laryngeal carcinoma (39 glottic and 14 supraglottic carcinoma patients) had primary carbon dioxide laser microsurgery. Nine radiation failure patients were treated. Postoperative radiotheray was done for 17 patients. Neck dissection was performed simultaneously for 4 supraglottic cases with cervical nodal metastasis. Mean follow-up duration was 40 months. Results: In primary laser surgery group, distribution of tumors (American Joint Committee on Cancer, 1997) were 38 cases with Tl, 13 cases with T2, 2 cases with T3. Cure rate was 88.7%(47/53) and local control rate was 92.5%(49/53). Larynx was preserved in 94%(50/53) of patients. The overall 5-year survival rate(Kaplan-Meier) was 81.5%. In radiation failure group, 56% of patients were recurred after laser surgery. Conclusion: Laser surgery could be a better treatment modality for early laryngeal cancers and selected advanced cases. Additional radiation therapy should be considered if resection margin is not satisfactory.