• Radiation Oncology Journal
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• 제32권2호
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• pp.99-102
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• 2014

We present a case of unresectable cancer of the base of tongue treated with hypofractionated 3D conformal radiotherapy and concomitant chemotherapy. Based on the excellent tumour response in this radiotherapy regimen and international experience in short course treatments we shortly reviewed, we propose that this therapeutic approach could be considered in a curative setting for patients unsuitable for the a standard long course radiochemotherapy schedule.

• 대한두경부종양학회:학술대회논문집
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• 대한두경부종양학회 2002년도 제19차 학술대회
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• pp.253-253
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• 2002

• Archives of Plastic Surgery
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• 제44권6호
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• pp.530-538
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• 2017

Background A pharyngocutaneous fistula is a common and difficult-to-manage complication after head and neck reconstruction. It can lead to serious complications such as flap failure, carotid artery rupture, and pharyngeal stricture, and may require additional surgery. Previous radiotherapy, a low serum albumin level, and a higher T stage have been proposed as contributing factors. We aimed to clarify the risk factors for pharyngocutaneous fistula in patients who underwent flap reconstruction and to describe our experiences in treating pharyngocutaneous fistula. Methods Squamous cell carcinoma cases that underwent flap reconstruction after cancer resection from 1995 to 2013 were analyzed retrospectively. We investigated several significant clinical risk factors. The treatment modality was selected according to the size of the fistula and the state of the surrounding tissue, with options including conservative management, direct closure, flap surgery, and pharyngostoma formation. Results A total of 127 cases (18 with fistulae) were analyzed. A higher T stage (P=0.048) and tube-type reconstruction (P=0.007) increased fistula incidence; other factors did not show statistical significance (P>0.05). Two cases were treated with conservative management, 1 case with direct closure, 4 cases with immediate reconstruction using a pectoralis major musculocutaneous flap, and 11 cases with direct closure (4 cases) or additional flap surgery (7 cases) after pharyngostoma formation. Conclusions Pharyngocutaneous fistula requires global management from prevention to treatment. In cases of advanced-stage cancer and tube-type reconstruction, a more cautious approach should be employed. Once it occurs, an accurate diagnosis of the fistula and a thorough assessment of the surrounding tissue are necessary, and aggressive treatment should be implemented in order to ensure satisfactory long-term results.

• Radiation Oncology Journal
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• 제14권1호
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• pp.9-15
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• 1996

목적 : 국소적으로 진행된 III, IV기 두경부종양의 방사선치료시 항암화학요법을 병행할 경우 방사선에 대한 민감도를 증가시켜 치료효과를 향상시키는 것으로 알려져 있다. 따라서 본 연구는 방사선-항암화학 병용요법이 국소제어율 및 생존율에 미치는 영향을 알아보기 위하여 방사선 단독치료군의 치료결과와 후향적으로 비교분석하였다. 대상 및 방법 : 1983년 11월부터 1994년 3월까지 인제대학교부속 백병원에서 두경부종양으로 진단받고, 추적관찰이 가능했던 III, IV기의 편평상피세포종양 환자 31명(I군: 방사선 단독치료 16명, II군: 방사선-항암화학 병용요법 15명)을 데상으로 하였다. 남녀 비는 I, II군에서 각각 12:4, 15:0 이었고 연령분포는 각각 17-74세(중앙값 64세), 34-71세(중앙값 54세)였다. 병기별 분포는 III기가 각각 5명, 3명, IV기가 11명, 12명이었다 방사선치료는 4MV 선형가속기(LINAC)를 사용하였고 총 방사선 조사선량은 I군 50-77.6Gy(중앙값 70.2Gey), II군 50-75.6Gy(중앙값 70Gy)이었다. 항암화학요법은 cisplatin + 5-FU (7명), methotrexate + leucovorin + 5-FU + cisplatin (혹은 carboplatin) (2명), 방사선민감제로서 clsplatin (6명)이 사용되었다. 결과 : 총 추적관찰기간은 4-134개월(중앙값 16개월)이었다 전체관해율은 I군 $66.6\%$(완전관해 $53.3\%$, 부분관해 $13.3\%$), 11군 $93.3\%$(완전관해 $60\%$, 부분관해 $33.3\%$)였고, 완전관해된 환자에서 2년 종양제어율은 각각 $50\%$, $40\%$이었다. 국소실패율은 I군과 II군에서 각각 $71.5\%$, $72.7\%$이었고, 원격전이율은 $14.4\%$와 $9.1\%$였다. 5년 생존율은 전체 환자에서 $21.5\%$, I군과 II군에서 $23.4\%$, $23.5\%$로 두 군간의 생존율의 차이는 통계학적으로 유의하지 않았다(P>0.05). 3년 무병생존율 역시 $44.5\%$와 $40\%$로 통계학적으로 유의한 차이를 보이지 않았다(P>0.05). 치료에 따른 급성 부작용은 피부독성이 I군 7/16명(RTOG/EORTC 등급 1; 5명, 2; 1명, 3: 1명), II군 5/15명(등급 2: 1명, 3: 4명, 4: 1명), 식도염 및 인두염이 각각 14/16명(등급 1: 7명, 2; 6명, 3이상 1명), 6/15명(등급 2: 1명, 3: 1명), 구강점막염은 각각 6/15명(등급 1: 1명, 2: 2명, 3; 2명, 4: 1명), 9/15명(등급 2: 4명, 4; 5명)으로 두 군간의 차이는 없었으나, 혈액학적 독성은 II군에서만 8/15($53.3\%$)가 관찰되었다. 결론 : 본 연구에서는 방사선-항암화학 병용요법군이 방사선 단독치료군에 비해 종양의 전체관해율은 높았으나, 5년 생존율 및 3년 무병 생존율에서는 두 군간에 통계학적으로 유의한 차이가 없었다(p>0.05). 그러나, 본 연구는 대상환자의 숫자가 제한되어 있어 항암화학요법의 역할을 규명하기 위해서는 앞으로 더 많은 환자를 대상으로 하여 오랜 기간의 추적관찰이 필요하리라 생각된다.

• 대한영상의학회지
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• 제84권6호
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• pp.1403-1407
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• 2023

방광암의 림프절 전이는 방광의 림프순환에서 처음과 두 번째로 거쳐 가는 외/내 장골, 폐쇄림프절과 총장골림프절에서 주로 일어난다. 방광암에서 횡격막을 넘어서 일어나는 전이는 드물고, 두경부로의 전이는 예후가 좋지 않으며 생존율도 낮다. 방광요로상피암 환자에서 뼈나 그 외에 고형장기로의 전이 없이 목 피부의 염증성 변화와 함께 림프절전이를 동반하는 것은 드문 증례이므로 이에 보고하고자 한다.

• Radiation Oncology Journal
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• 제27권2호
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• pp.55-63
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• 2009

목 적: 근치적 치료가 힘든 두경부 진행암 환자들을 대상으로 시행된 소분할 방사선조사의 치료반응 정도를 객관적으로 평가해 보고, 이런 환자들에 대한 적절한 방사선치료 방법을 알아보고자 이 연구를 진행하였다. 대상 및 방법: 두경부에서 발생한 상피세포암종으로 진단되어 1998년부터 2008년까지 원발 병변 또는 림프절 병변에 대해 3 Gy 분할선량으로 고식적 소분할 방사선치료를 받았던 환자 31명을 대상으로 후향적 분석을 하였다. 대상 환자들의 방사선치료 전 컴퓨터단층촬영 영상자료를 통해 종양의 용적을 측정하였고, 이를 방사선치료 종료 후 2~3개월째의 컴퓨터단층촬영 자료와 비교하여 치료반응을 평가하였다. 아울러 소분할 방사선치료로 인한 치료독성의 빈도와 정도를 확인하였고, 전체 생존율 및 무진행 생존율, 그리고 생존율이나 치료반응과 관련된 예후인자들 알아보고자 통계 분석 작업을 하였다. 결 과: 대상 환자들의 평균 연령은 70세였으며, 85%의 경우가 stage 4였다. 종양의 용적은 평균 128.4 cc였고, ECOG 활동점수 상 1점과 2점이 67.7%였다. 총방사선량은 24~45 Gy (중간값 36 Gy)로 2명을 제외한 대부분의 환자가 30 Gy 이상 조사받았으며, 치료기간은 10~25일이었다. 완전반응을 보인 경우가 4명(12.9%)이었고, 19명(61.3%)의 환자에서 부분반응을 보였다. 중간 생존기간은 8.9개월이었으며, 1년 무진행생존율은 12.9%였다. 치료반응 정도에 따른 생존율의 차이를 발견할 수 있었으며, 원발 부위, 병기, 종양의 용적, 방사선치료 범위, 총방사선량 등이 생존율이나 치료반응 정도와 유의한 관련이 있었다. 치료 기간 및 치료 종결 후 grade 4 이상의 치료독성은 없었다. 결 론: 소분할 방사선치료 결과 약 74%의 환자들에서 종양이 줄어드는 것을 객관적으로 확인할 수 있었다. 적절한 분할선량 및 추가 방사선치료가 필요한 환자들의 선별에 있어서는 추가적인 연구가 필요하겠다.

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

• Asian Pacific Journal of Cancer Prevention
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• 제16권18호
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• pp.8247-8252
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• 2016

Background: The ubiquitin-proteasome system (UPS) degrades a variety of proteins which attach to specific signals. The ubiquitination pathway facilitates degradation of damaged proteins and regulates growth and stress responses. This pathway is altered in various cancers, including acute lymphoblastic leukemia, head and neck squamous cell carcinoma and breast cancer. Recently it has been reported that expression of newly characterized human genes, UBE2Q1 and UBE2Q2, putative members of ubiquitin-conjugating enzyme family (E2), has been also changed in colorectal cancer. Epigenetics is one of the fastest-growing areas of science and nowadays has become a central issue in biological studies of diseases. According to the lack of information about the role of epigenetic changes on gene expression profiling of UBE2Q1 and UBE2Q2, and the presence of CpG islands in the promoter of these two human genes, we decided to evaluate the promoter methylation status of these genes as a first step. Materials and Methods: The promoter methylation status of UBE2Q1 and UBE2Q2 was studied by methylation-specific PCR (MSP) in tumor samples of 60 colorectal cancer patients compared to adjacent normal tissues and 20 non-malignant controls. The frequency of the methylation for each gene was analyzed by chi-square method. Results: MSP results revealed that UBE2Q2 gene promoter were more unmethylated, while a higher level of methylated allele was observed for UBE2Q1 in tumor tissues compared to the adjacent normal tissues and the non malignant controls. Conclusions: UBE2Q1 and UBE2Q2 genes show different methylation profiles in CRC cases.

• 대한후두음성언어의학회지
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• 제19권1호
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• pp.21-27
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• 2008

Total laryngectomy is the most useful procedure tor advanced laryngopharyngeal cancer, but it remains the major problem such as loss of voice. Voice restoration is essential for every patients who undergo a total laryngectomy. Ideal voice rehabilitation methods can resolve three factors. First, every laryngectomee can produce voice sufficient for communication, second every patient should be allowed to use both hands freely during phonation, and last, the voice restoration methods should be easy and safe without complication during and after treatment. Among various voice rehabilitation procedures during or after total laryngectomy, it can be divided electronic and pneumatic methods. In pneumatic methods, there are also divided both pulmonary air and non-pulmonary air methods. The non-pulmonary air methods include esophageal speech, buccal speech, and pharyngeal speech. Pulmonary air methods are divided into surgical and non-surgical such as pneumatic speech aid. In the surgical methods, there are neoglottic operation, tracheopharyngeal shunt, and tracheopharyngeal shunt operations. Recently, tracheoesophageal shunt with or without prosthesis are being recognized the most effective method. Blom-Singer low pressure prosthesis, Panje button, and Provox are well known types of prosthesis in the tracheoesophageal shunt operation. Amatsu method is a kind of famous tracheoesophageal shunt method without using prosthesis. Authors tried to review the published articles for evaluation of effectiveness and problems of tracheoesophageal shunt operation with or without prosthesis. In conclusion, indwelling type of prosthesis and pharyngeal myotomy and plexus neurectomy are recommended for higher success rate during tracheoesophageal puncture procedure. More over, Amatsu method is also one of the recommended voice rehabilitation procedure during total laryngectomy. In this situation, pharyngeal myotomy and plexus neurectomy may be helpful for better fluent communication.

• 대한두경부종양학회지
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• 제14권1호
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• pp.27-34
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• 1998

Objectives, Materials & Methods: To prevent deterioration of postoperative voice due to iatrogenic transection of the recurrent laryngeal nerve during the thyroid surgery, intraoperative medialization of the membranous vocal cord by type I thyroplasty together with direct epineurial neurorraphy was done on 2 cases of benign thyroid lesion. To improve the quality of voice together with complete removal of advanced thyroid carcinoma, intraoperative vocal cord medialization on the lesion side together with total thyroidectomy was done by type I thyroplasty in 2 cases and combined procedure by arytenoid adduction and type I thyroplasty in another 2 cases. Results: The resultant voice of the iatrogenic injury cases was relatively tolerable. The voice of the combined procedure was better than that of type I thyroplasty cases for the intraoperative rehabilitation cases. Not only for the preoperative evaluation of the severity of the nerve lesion but also the prognosis will be expected by use of laryngeal EMG in the cases of thyroid cacer with vocal cord palsy. Conclusion: Intraoperative simultaneous rehabilitation for the vocal cord palsy during thyroid surgery is beneficial for the patients.