• Asian Pacific Journal of Cancer Prevention
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• 제16권3호
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• pp.1111-1116
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• 2015

Background: To investigate the relationship between pathologic tumor response to concurrent chemoradiotherapy and variation of serum VEGF in patients with esophageal cancer. Materials and Methods: Forty six patients with esophageal cancer who were treated with concurrent chemo-radiotherapy were enrolled. Endoscopic and pathologic examination was conducted before and four weeks afterwards. Serum level of VEGF was documented before, four weeks later and after chemo-radiotherapy. The relationship between pathologic response and the variation of serum level of VEGF and its influence on the prognosis were investigated. Results: Serum level of VEGF decreased remarkably during and after chemo-radiotherapy in patients whose pathologic response was severe (F=5.393, 4.587, P(0.05). There were no statistical differences of serum VEGF level before, during and after chemo-radiotherapy for patients whose pathologic response was moderate or mild. There were 18 (85.7%), 7 (53.8%) and 6 patients (50.0%) whose serum VEGF level dropped in the severe, moderate and mild group, respectively, with significant differences among these groups (p=0.046). Two year survival rates of patients with severe, moderate and mild pathologic response were 61.9%, 53.8% and 33.3% respectively, and no statistically difference between severe and mild group regarding OS (p=0.245) was tested. Conclusions: Tumor pathologic response during chemo-radiotherapy and the changes of serum VEGF lever could predict curative effects of chemo-radiotherapy in patients with esophageal cancer.

• 대한두경부종양학회지
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• 제12권1호
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• pp.92-99
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• 1996

The primary treatment of the nasopharyngeal carcinoma is at this time, mainly based on radiotherapy. In most studies for patient treated with radiotherapy, overall 5-year survival rate is in the range of 35 to 55%. Obviously, these therapeutic results may be influenced by various factors such as clinical stages, histopathological types and radiation techniques, etc. Though the radiotherapy had a good therapeutic result, there is a limitation to apply the radiotherapy only in cases of the advanced nasopharyngeal carcinoma. Anatomical complexity of the skull base and difficulties in complete surgical intervention were the trouble of the surgery but in the case of radiation failure, there is no adequate choice of other curative modalities. So it is appropriate to investigate whether surgical resection may improve the outcome of treatment of nasopharyngeal carcinoma. The purpose of this papaer is to report our surgical experience of the nasopharyngeal carcinoma, then to take into consideration of the new model of treatment strategy of nasopharyngeal carcinoma.

• 대한두경부종양학회지
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• 제9권2호
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• pp.200-209
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• 1993

The primary treatment of the nasopharyngeal carcinoma is, at this time, mainly based on radiotherapy. In most studies for patient treated with radiotherapy, overall 5-year survival rate is in the range of 35 to 55%. Obviously, these therapeutic results may be influenced by various factors such as clinical stages, histopathological types and radiation techniques, etc. Though the radiotherapy had a good therapeutic result, there is a limitation to apply the radiotherapy only in cases of the advanced nasopharyngeal carcinoma. Anatomical complexity of the skull base and difficulties in complete surgical intervention were the trouble of the surgery but in the case of radiation failure, there is no adequate cholice of other curative modalities. So it is appropriate to investigate whether surgical resection may improve the results of treatment of nasopharyngeal carcinoma. The purpose of this paper is to report the surgical experience with nasopharyngeal carcinoma, then to take into consideration of the new model of treatment strategy of nasopharyngeal carcinoma.

• Radiation Oncology Journal
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• 제15권4호
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• pp.315-319
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• 1997

목적 : 조기성문암의 치료시 근치적방사선치료의 효율성과 치료실패시 구제술 시행의 효과를 알아보고자 하였다. 대상 및 방법 : 1989년 6월부터 1994년 12월 사이에 경상대학교병원에서 방사선치료를 시행 받은 18명의 T1N0M0과 5명의 T2N0M0을 포함하는 23명의 조기성문암 환자에 대하여 후향적분석을 시행하였다. 모든 환자가 남자이었고, 연령분포는 33세부터 70세로 중앙값은 57세이었다. 추적조사기간의 중앙값은 46개월이었고, $100\%$의 환자에서 추적이 가능하였다. 결과 : 전체환자의 5년 생존율은 $84.3\%$이었고, 병기에 따라서 T1 $94.4\%,\;T2\;53.3\%$이었다. 전체환자의 5년 국소치유율은 $67.8\%$이었고, 병기에 따라서 T1 $70.0\%,\;T2\;60.0\%$이었다. 치료실패한 환자 8명 중 5명에서 구제술이 시행되었다. 구제술후 5년 국소치유율은 T1 $85.6\%,\;T2\;80.0\%$이었다. 결론 : 병기 T1, T2의 조기성문암의 치료시 우선 근치적 방사선치료를 시행하고, 치료실패시구제술을 시행하는 것이 높은 국소치유율과 성대보존율을 기대할 수 있는 효과적인 치료방법이라고 판단된다.

• Radiation Oncology Journal
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• 제33권3호
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• pp.198-206
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• 2015

Purpose: We evaluated the prognostic factors and clinical outcomes of 56 patients with vulvar cancer treated with curative radiotherapy (RT) or concurrent chemoradiotherapy. Materials and Methods: Overall survival (OS) and disease-free survival (DFS) were assessed retrospectively. Prognostic factors evaluated included age, International Federation of Gynecology and Obstetrics (FIGO) stage, TNM classification, tumor size, treatment modality, RT duration, and RT field. The association between the tumor human papillomavirus (HPV) status and survival was analyzed in 35 patients. Results: During the median follow-up of 2.8 years (range, 0.3 to 18.9 years), 21 patients (37.5%) experienced treatment failure. Fifteen patients (27%) had local failure: nine (16%) local failure only, three (5%) locoregional failure, two (4%) local and distant failure, and one (2%) locoregional and distant failure. Of 56 patients, seven (13%) had persistent disease at the first follow-up at 2 months and all but one died within a year after completing RT. The 5-year OS and DFS were 51.6% and 44.0%, respectively. In multivariate analysis, clinical size ${\geq}3$ cm predicted a poor prognostic factor for DFS (p = 0.040) and age (${\geq}70years$) was poor prognostic for DFS (p = 0.032) and OS (p = 0.048). Patients with HPV-positive tumors tended to have better 5-year OS and DFS, but the differences were not significant statistically. Conclusion: Clinical size ${\geq}3$ cm was a significant prognostic factor for DFS. However, age was the most important prognostic factor for DFS and OS in patients treated with curative RT. Further studies are needed to determine which treatment should be considered for old age ${\geq}70years$.

• Asian Pacific Journal of Cancer Prevention
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• 제16권3호
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• pp.1255-1258
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• 2015

Background: Locally advanced head and neck cancer is generally incurable and has a short survival rate. This study aimed to evaluate symptom relief, disease response, and acute toxicity after palliative hypo-fractionated radiotherapy and long-term survival in affected patients. Materials and Methods: Between January 2011 to December 2011, 80 patients who were histopathologically diagnosed as having stage III or stage IV head and neck squamous cell carcinoma based on Eastern Cooperative Oncology Group (ECOG) performance status 1-3, were offered palliative radiotherapy (20 Gy/5Fr/5 Days). Later these patients were evaluated on 30th day after completion of treatment for disease response based on World Health Organisation (WHO) criteria and palliation of symptoms using symptomatic response grading and acute toxicities by the Radiation Therapy Oncology Group (RTOG). Many patients were given post radiation therapy (RT) palliative chemotherapy for appropriate palliative care and a few patients were selected for further curative RT. The overall survival was also evaluated among this group of patients with last follow up date of 1st May, 2014. Results: The most common presenting complaint was pain followed by dysphagia. Most patients (60-70%) had appreciable relief in their presenting symptoms. A good response was observed in the majority following palliative RT; a few patients had progressive disease and some had stable and regressed disease. None of the patients experienced radiation toxicity that required hospital admission. Almost all showed grade one and two acute skin and mucosal toxicity one month after completion of treatment. The mean survival days for patients given only hypofractionated palliative RT was 307 days, those with post palliative RT and palliative chemotherapy was 390 days and patients who went on to receive further palliative RT and curative RT dose had significantly overall survival of 582 days. Conclusions: Advanced head and neck cancer should be identified for suitable palliative hypofractionated radiotherapy to achieve acceptable symptom relief in a great proportion of patients and should be followed by palliative chemotherapy or curative RT in suitable cases for long-term symptom-free survival.

• Radiation Oncology Journal
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• 제37권4호
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• pp.279-285
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• 2019

Purpose: This study was conducted to compare the outcome of three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) for the postoperative treatment of biliary tract cancer. Materials and Methods: From February 2008 to June 2016, 57 patients of biliary tract cancer treated with curative surgery followed by postoperative 3D-CRT (n = 27) or IMRT (n = 30) were retrospectively enrolled. Results: Median follow-up time was 23.6 months (range, 5.2 to 97.6 months) for all patients and 38.4 months (range, 27.0 to 89.2 months) for survivors. Two-year recurrence-free survival is higher in IMRT arm than 3D-CRT arm with a marginal significance (25.9% vs. 47.4%; p = 0.088). Locoregional recurrence-free survival (64.3% vs. 81.7%; p = 0.122) and distant metastasis-free survival (40.3% vs. 55.8%; p = 0.234) at two years did not show any statistical difference between two radiation modalities. In the multivariate analysis, extrahepatic cholangiocarcinoma, poorly-differentiated histologic grade, and higher stage were significant poor prognostic factors for survival. Severe treatment-related toxicity was not significantly different between two arms. Conclusions: IMRT showed comparable results with 3D-CRT in terms of recurrence, and survival, and radiotherapy toxicity for the postoperative treatment of biliary tract cancer.

• Radiation Oncology Journal
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• 제13권1호
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• pp.63-67
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• 1995

A retrospective study was carried out of 20 patients with histologically proven invasive carcinoma of the vagina from 1979 to 1993; 17 cases with curative primary radiotherapy and three cases with postoperative radiotherapy. The five and ten year overall survival rates were $79\%$ and $53\%$, respectively. Survival was strongly correlated with stage. Five year survival rates of stage I, stage II, and stage III, IV were $100\%$, $78\%$, and $0\%$, respectively. Eight patients experienced recurrences: five within the irradiated volume, two distant metastasis, and one combined both local and distant metastasis. There was no significant late complication. From these data, radiation is effective in the management of the vaginal cancer patients and optimum treatment modality and total dose recommendation are made.

• Radiation Oncology Journal
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• 제29권2호
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• pp.127-133
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• 2011

5년 반 전 처음 위암 발견 당시 45세였던 여자 환자로 처음부터 원격전이가 있었던 상태였으며 위절제술과 전이부위 절제를 포함한 수술과 항암제치료를 받았다. 그 후 4년 2개월 전부터 여러 차례 새로운 원격전이가 나타날 때마다 간헐적인 경구용 TS-1 항암제 치료와 함께 방사선치료를 시행 받았다. 방사선치료는 4년여에 걸쳐서 8차 시행하였으며 총 시행부위 수는 17 부위였다. 환자의 방사선치료 부위들 중에 근치적 방사선량의 치료를 받은 부위들은 그 뒤 수년의 시간이 흘러도 해당 부위의 국소조절 상태가 유지되었다. 환자는 현재 51세로 일상생활에는 별 지장이 없는 상태이다.

• Radiation Oncology Journal
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• 제2권1호
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• pp.41-47
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• 1984

From March of 1979 through December of 1982, 84 Patients with supraglottic carcinoma were seen and evaluated in the Department of Therapeutic Radiology, Seoul National University Hospital. Of these, 68 patients were treated with a curative intent by employing either radiotherapy alone or a combined approach of radiotherapy Plus surgery. Sixteen patients refused to complete the treatment program. Seventy-three per cent of patients had $T_3\;and\;T_4$ lesions and $63\%$ of patients had lymph node metastasis at the time of diagnosis. Actuarial recurrence-free survival at 3 year was: Stage $I\~II\;62\;%,\;Stage\;III \;54\%,\;Stage\;IV\;18\%$, For $T_{1-2},\;T_3\;and\;T_4$ lesions, the actuarial recurrence free survival at 3 years were 50\%,\;34\;%\;and \;9\%$ respectively. Of 39 Patients with treatment failure, 29 Patients $(78\%)$ had uncontrol or ultimate recurrence at the primary site while 9 patients having lymph node recurrence, 14 patients$(21\%)$ had lymph node recurrence, and S patients had distant metastasis. It is suggested that planned combined radiotherapy is indicated for advanced but rescetable supraglottic carcinoma.