• Annals of Coloproctology
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• 제34권6호
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• pp.312-316
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• 2018

Purpose: Anemia is associated with poor treatment results for a variety of cancers. The effect of low hemoglobin levels on long-term outcomes after the treatment of patients with an anal squamous cell carcinoma (SCC) remains unclear. For that reason, this study aimed to investigate the effect of anemia on treatment outcomes following chemoradiation for an anal SCC. Methods: This was a retrospective study of all patients who underwent curative treatment for an anal SCC between 2009 and 2015 at 2 trusts in the United Kingdom. Data were collated from prospectively collected cancer databases and were cross-checked with operating-room records and records in the hospitals' patient management systems. Results: We identified 103 patients with a median age of 63 years (range, 36-84 years). The median overall survival was 39 months (range, 9-90 months), and the disease-free survival was 36 months (range, 2-90 months). During the follow-up period, 16.5% patients died and 13.6% patients developed recurrence. Twenty-two people were anemic prior to treatment, with a female preponderance (20 of 22). No differences in disease-free survival (P = 0.74) and overall survival (P = 0.12) were noted between patients with anemia and those with normal hemoglobin levels. On regression the analysis, the combination of anemia, the presence of a defunctioning colostomy, lymph-node involvement and higher tumor stage correlated with poor overall survival. Conclusion: In this study, anemia did not influence disease-free survival or overall survival. We suggest that the interaction between anemia and survival is more complex than previously demonstrated and potentially reliant on other coexisting factors.

• Radiation Oncology Journal
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• 제18권1호
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• pp.11-16
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• 2000

목적 : 진행된 식도암 환자에서 외부 방사선 단독치료를 받았던 환자의 치료성적에 대하여 후향적 분석을 시행하였다. 재료 및 방법 : 흉곽내에 위치한 편평상피세포암의 식도암으로 1990년 7월부터 1996년 12월까지 전남대학교병원 치료방사선과에서 외부 방사선 단독 치료를 받은 106명을 대상으로 후향적 분석을 시행하였다. 근치 목적의 방사선은 6 MV 혹은 10 MV X선으로 55 Gy에서 70.8 Gy 의 선량으로 통상적인 분할치료를 시행하였다. 추적이 가능한 환자는 100명(94$\%$)으로 추적기간은 1개월에서 92개월(중앙값: 6개월)이었다. 결과 :전체환자의 중앙연령은 62세였으며, 남녀 비율은 104:2였다. 가장 흔한 병변부위는 중앙 부위로 54$\%$를 차지하였다. 83$\%$의 환자가 근치목적의 방사선치료를 받았고 이들의 평균 방사선 선량은 58.6 Gy였으며(55$\~$70.8 Gy)평균 치료소요기간은 53일이었다. 전체환자의 중앙생존기간은 6개월이었고, 1, 2년 생존율은 각각 27, 12$\~$였다. 연하곤란으로 위루술을 시행한 7명을 제외하고 대부분의 환자에서 증상의 완화를 보였다. 치료 직후 완전 관해율은 32$\~$ (34/106)였고 이들 환자의 중앙생존기간(14개월)과 2년 생존율(30$\%$)은 다른 환자의 중앙생존기간(4개월)과 2년 생존율(30$\%$)에 비해 좋았다(p=0.000). 진단시 연하곤란의 정도에 따른 중앙생존기간과 2년 생존율을 비교해보면, 정상적인 음식물 섭취가 가능한 경우는 9개월과 16$\%$인 반면, 전혀 음식물을 삼킬 수 있었던 환자의 경우는 3개월과 0$\%$였다(p=0.004). 그러나 식도주변조직의 침범이나 주변 임파절 침범 유무에 따른 두 군간의 성적의 차이는 보이지 않았다. 다요인 분석에서는 방사선치료 직후 종양의 완해 여부가 가장 중요하였고 그외 원발 병소의 길이, 진단 당시 연하곤란의 정도 순으로 생존율에 통계적으로 유의한 영향을 주는 인자였다. 치료로 인한 부작용은 10명의 환자에서 관찰되었다(9$\%$). 결론 : 진행된 식도암 환자의 외부방사선 단독 치료는 좋지 않은 결과를 보여 주었다. 이에 진행된 병기의 식도암환자의 치료 선택에 있어서 반드시 근접치료나 항암화학요법의 병행을 고려해야 하겠다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권4호
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• pp.1627-1632
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• 2014

Background: Several studies indicated that the diagnosis season affects the prognosis of some cancers, such as examples in the prostate, colon and breast. This retrospective study aimed to investigate whether the diagnosis and recurrent season impacts the prognosis of epithelial ovarian cancer patients. Methods: From January 2005 to August 2010, 161 epithelial ovarian cancer patients were analyzed and followed up until August 2013. Kaplan-Meier survival curves and the log-rank test were used to make the survival analysis. Multivariate analysis was conducted to identify independent prognostic factors. Results: The prognostic factors of overall survival in epithelial ovarian cancer patients included age, clinical stage, pathological type, histological grade, residual disease after primary surgery, recurrent season and adjuvant chemotherapy cycles. Moreover, clinical stage, histological grade, residual disease after primary surgery, recurrent season and adjuvant chemotherapy cycles also impacted the progression-free survival of epithelial ovarian cancer patients. The diagnosis season did not have a significantly relationship with the survival of operable epithelial ovarian cancer patients. Median overall survival of patients with recurrent month from April to November was 47 months, which was longer (P < 0.001) than that of patients with recurrence month from December to March (19 months). Median progression-free survival of patients with recurrence month from April to November and December to March was 20 and 8 months, respectively (P < 0.001). Conclusion: The recurrence season impacts the survival of epithelial ovarian cancer patients. However, the diagnosed season does not appear to exert a significant influence.

• Asian Pacific Journal of Cancer Prevention
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• 제17권4호
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• pp.2055-2060
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• 2016

Background: Colorectal cancer (CRC) is one of the most common causes of death worldwide and in Thailand. The X-ray repair cross-complementary protein 1 (XRCC1) is required for efficient DNA repair. The effects of this gene on survival in colorectal cancer remain controversial and have not been reported in Thailand. The aim of this study was to investigate the association of the XRCC1 gene with survival of colorectal cancer patients in a Thai population. Materials and Methods: Data and blood samples were collected from 255 newly diagnosed and pathologically confirmed CRC patients who were recruited during the period 2002 to 2006 and whose vital status was followed up until 31 October, 2014. Real-time PCR-HRM was used for genotype identification. The Kaplan-Meier method, the log-rank test, and Cox proportional hazard regression were used to estimate cumulative survival curves and compare various survival distributions and adjusted hazard ratios. Results: Most of the cases were males, and the median age was 55 years. The median survival time was 2.43 years. The cumulative 1-, 3-, 5-, 7-, and 10 year survival rates were 76.70%, 39.25%, 26.50%, 16.60% and 3.56%, respectively. After adjustment, female gender, ages 50-59 and ${\geq}60years$, tumour stage III+IV, a signet-ring cell carcinoma, and poor differentiation had significant associations with increased risk of CRC death. While the XRCC1 Arg/Arg homozygote appeared to be a risk factor for CRC death, the association was not significant. Conclusions: The genetic variant in the XRCC1 may not be associated with the survival of CRC patients in Thailand. Further studies are needed to verify our findings.

• Journal of Korean Neurosurgical Society
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• 제30권sup2호
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• pp.266-272
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• 2001

Objectives : Chemotherapy remains part of the treatment triad that includes surgery and radiotherapy for the management of glioblastomas, but disappointing results of chemotherapy have raised the suggestion that chemotherapy should perhaps be abandoned. In order to determine the chemotherapy effect given in addition to radiotherapy, we performed a randomized clinical study of irradiation alone and combination of irradiation with chemotherapy in the treatment of glioblastomas. Methods : From 1991 to 1999, 204 consecutive patients suffering from supratentorial glioblastomas were treated in our hospital. We compared the survival rates/times of these patients according to the treatment modalities[group I-67 patients treated by surgery with radiotherapy and adjuvant chemotherapy(ACNU, paclitaxel, tamoxifen, and others) ; group II-106 by surgery with radiotherapy ; and group III-31 by surgery only]. Results : The overall median survival time was 12 months, with overall survival rates at 1 and 2 year of 46.7% and 16.6%, respectively. On univariate analysis, median survival and 1- and 2-year survival rates were statistically improved by the use of chemotherapy ; group I-15 months, 75.7%, and 25.9%, group II-11 months, 39.3%, and 15.4%, and group III-3 months, 9.7%, and 6.5%, respectively(p=0.0001). But, on multivariate analysis considering compounding variables, survival was independently associated only with radiotherapy(p=0.0112). Conclusion : These results suggest that the addition of chemotherapy to radiotherapy does not affect the overall survival in glioblastomas. Mainly long-survivor glioblastoma patients might benefit by adjuvant chemotherapy, which probably means patients with initial favorable prognostic factors(young age, minimal residual tumors, good performance status). It is necessary to continue to search for an effective chemotherapy regimen to prolong survival of patients with glioblastomas.

• Asian Pacific Journal of Cancer Prevention
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• 제15권8호
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• pp.3435-3441
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• 2014

Background: Axillary lymph node status at diagnosis remains the strongest predictor of long-term survival in breast cancer. Patients with more than ten axillary lymph nodes at diagnosis have a poor long-term survival. In this single institutional study, we set out to evaluate the prognosis of this high-risk group in the era of multimodality therapy. Materials and Methods: In this retrospective study, we looked at all breast cancer patients with greater than ten axillary lymph nodes diagnosed at Mount Sinai Medical Center (MSMC) from January 1st 1990 to December 31st 2007 (n=161). In the univariate analysis, descriptive frequencies, median survival, and 5- and 10-year survival rates were estimated for common prognostic factors. A multivariate prognostic analysis for time-to-event data, using the extended Cox regression model was carried out. Results: With a median and mean follow-up of 70 and 89.9 months, respectively, the overall median survival was estimated to be 99 months. The five-year disease-free survival (DFS) was 59.3% and the ten-year DFS was 37.9%, whereas the five- and ten-year overall survival (OS) was 66.6% and 43.9%, respectively. Multivariate analysis revealed a significant improvement in DFS among black patients compared to whites (p=0.05), improved DFS and OS among young patients (ages 21-45) compared to elderly patients (age greater than 70) (p=0.00176, p=0.0034, respectively), and improved DFS and OS among patients whose tumors were ER positive (p=0.049, p=0.0034). Conclusions: In this single institution study of patients with greater than 10 positive axillary nodes, black patients had a significantly improved DFS compared with white patients. Young age and ER tumor positivity was associated with improved outcomes. Using multivariate analysis, there were no other variables associated with statistically significant improvements in DFS or OS including date of diagnosis. Further work is needed to improve breast cancer survival in this subgroup of patients.

• Tuberculosis and Respiratory Diseases
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• 제43권5호
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• pp.709-719
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• 1996

연구 배경: 비소세포 폐암의 근치적 치료는 수술적 절제에 주로 의존하고 있고 근치적 수술을 받은 환자의 예후는 수술당시의 병기가 중요하며 진행된 병기의 환자일수록 총 생존기간 및 무병생존기간이 현저하게 단축됨이 많은 연구자에 의해 보고되었다. 또한 근치적 수술 후의 재발은 수술부위보다는 원격 전이에 의한 재발이 많으므로 수술 후의 생존율을 향상시키기 위해서는 원격전이에 의한 재발을 억제할 수 있는 효과적인 수술 후 보조요법이 필요하다. 수술 후의 보조요법은 방사선 치료 및 항암제 투여가 있으나 각각의 치료 방법에 따른 생존율의 보고는 연구자에 따라 상이 한 결과를 보이고 있으며 국내 연구보고는 거의 없는 실정이다. 이에 연구자등은 1990년 1월부터 1995년 12월까지 연세대학교 의과대학 부속 세브란스 병원 흉부외과에서 근치적 절제술을 시행받은 282 명의 비소세포 폐암 환자를 대상으로 수술 후 보조요법의 효과 및 예후인자에 대한 분석을 시행하였다. 방법: 후향적 연구였으며 환자의 생존율은 Kaplan-Meier방법으로 분석하였다. 환자생존에 영향을 미치는 예후인자에 대한 분석은 Cox regression model에 의한 단일 및 다중 변수분석에 준하였다. 결과: 대상 환자의 조직학적 유형으로는 편평상피암이 166예(59%), 선암이 86예(30%), 편평상피선암이 11예(3.9%), 미분화 거대세포암이 19예(7.1%)이었다. 병기는 TNM분류에 따라 l기 93명, II기 58명, IIIa기 131명이었다. 수술 후 재발한 환자는 139명이었고 국소 재발이 28예(20.1%), 원격전이가 111예(79.9)이었다. 병기에 따른 5년 생존율은 I기 50.1%, II기 3 1.3%, IIIa기 24.1%였고(p<0.0001) 병기에 따른 중앙 생존 기간은 I기 55개월, II기 27개월, IIIa기 16개월로 나타났다(p<0.0001). IIIa병기의 환자중 수술 후 항암제만을 투여받거나 항암제와 방사선치료를 받은 환자는 81명이었고 이들의 중앙 생존 기간은 19개월이었으며 수술만을 받거나 수술후 방사선 치료만을 받은 환자는 50명이었는데 이들의 중앙 생존 기간은 14개월로서 양군간에 통계적으로 유의한 차이는 없었다(p=0.2982) 또한 IIIa 병기의 환자중 수술만을 받은 환자는 11명이었고 이들의 중앙무병 생존기간은 4개월이었으며 수술후 항암제 투여만을 받은 환자는 21명이었고 이들의 중앙무병 생존기간은 16개월로 양군간에 통계적으로 의미있는 생존기간의 차이를 보였다(P=0.0494) IIIa 병기중 N2기의 환자는 92명으로 5년 생존율은 25%, 중앙 생존 기간은 15개월이었다. 이들 중 수술 후 항암제 투여군은 62명으로 중앙 생존 기간은 18개월이었고 비투여군은 30명으로 이들의 중앙 생존기간은 14개월이었으며 양군간에 통계적으로 유의한 차이는 없었다(p=0.3988). N2기 환자중 수술후 방사선 치료를 받은 환자는 66명으로 이들의 중앙 생존 기간은 16개월이었고 방사선 치료를 받지 않은 환자는 26명으로 이들의 중앙 생존 기간은 14개월이었다. 양군간에 통계적으로 유의한 생존 기간의 차이는 없었다(p=0.6588). Cox Multiple Regression Model을 이용하여 수술 후 환자의 생존율에 영향을 미치는 예후 인자에 대하여 분석한 결과 환자의 연령(p=0.0093)과 병기(p<0.0001)만이 통계적으로 유의하였다. 결론: 비소세포 폐암 환자의 연령과 병기가 유의한 예후 인자이었으며, 보조 요법에 따른 생존율에 유의한 차이는 없었다. 따라서 수술 후 환자의 생존율을 향상시키기 위해서는 더욱 효과적인 보조요법의 개발이 필요할 것으로 생각된다.

• Tuberculosis and Respiratory Diseases
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• 제49권3호
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• pp.323-331
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• 2000

목적 : 소세포 폐암 환자에서 생존율이 향상됨에 따라서 뇌전이의 임상적 중요성이 커지고 있다. PCI 는 뇌전이 빈도를 감소시키며 특히 완전관해된 제한병기 소세포 폐암 환자에서는 생존기간의 연장까지 가져온다는 보고도 있다. 저자들은 완전관해가 된 제한병기 소세포 폐암환자에서 PCI를 시행한 후 뇌전이의 빈도, 생존율 및 임상상을 알아보고자 하였다. 대상 및 방법 : 1989년 3월부터 1999년 9월까지 충남대학교병원에 입원하여 조직학적으로 소세포 폐암으로 확진되고 병기분류상 제한병기로 분류된 후 항암 화학요법 및 방사선치료후 완전관해가 된 환자중 PCI를 시행 받은 42명올 대상으로 후향적분석을 하였다. 항암 화학요법은 초치료로 VPP/CAV교대요법을 6회이상 시행 하였고, 흉부 방사선치료는 동시치료군이 38.1%, 연속치료군이 61.9%였다. 결과 : 대상환자의 88.1%가 남자였고, 중앙연령은 58세였다. 중앙 관찰기간은 18.1개월이었다. 경과 관찰 중에 57.1%에서 전이 또는 재발하였는데, 뇌전이는 14.3%에서 발생하였고, 폐 원발병소에서 재발된 경우가 35.7%로 가장 많았다. 평균 무병생존기간은 1,090일(중앙값 305일), PCI후 뇌전이가 발생하기까지는 평균 2,548일, 뇌전이를 제외한 전이 및 재발되기까지는 평균 1,395일(중앙값 460일)이었다. 생존기간의 중앙값은 21.1개월, 2년생존율은 41.7% 이었다. 전이 및 재발이 발생한 군의 평균 생존기간은 642일(중앙값 489일), 발생하지 않은 군의 평균 생존기간은 2,622일로 유의한 차이가 있었으나, 뇌전이 유무에 따른 생존기간의 차이는 없었다. 사망원인은 원발 병소의 재발 및 전신질환에 의한 사망이 많았고(85.7%), 뇌전이자체에 의한 사망은 14.3%이었다. 결론 : 완전관해가 된 제한병기 소세포 폐암 환자에서 PCI는 뇌전이를 감소시키고 지연시키는 경향이 있었다. 전이 및 재발이 있는 군에서 생존기간이 짧았으나 뇌전이 유무에 따른 생존기간의 차이는 없었고 주된 사망원인이 뇌전이보다는 원발병소의 재발과 전이 및 전산질환에 의한 것이 대부분이어서, 생존율을 높이기위해서는 원발병소의 재발과 전이 및 전신질환에 의한 것이 대부분이어서, 생존율을 높이기 위해서는 원발병소의 재발 및 전이를 감소시킬 수 있는 효과적인 치료방법의 개발 및 전신진환의 적절한 조절이 필요한 것으로 생각된다.

• Journal of Korean Neurosurgical Society
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• 제54권4호
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• pp.329-335
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• 2013

Objective : Brain metastases in primary breast cancer patients are considerable sources of morbidity and mortality. Gamma knife radiosurgery (GKRS) has gained popularity as an up-front therapy in treating such metastases over traditional radiation therapy due to better neurocognitive function preservation. The aim of this study was to clarify the prognostic factors for local tumor control and survival in radiosurgery for brain metastases from primary breast cancer. Methods : From March 2001 to May 2011, 124 women with metastatic brain lesions originating from a primary breast cancer underwent GKRS at a tertiary medical center in Seoul, Korea. All patients had radiosurgery as a primary treatment or salvage therapy. We retrospectively reviewed their clinical outcomes and radiological responses. The end point of this study was the date of patient's death or the last follow-up examination. Results : In total, 106 patients (268 lesions) were available for follow-up imaging. The median follow-up time was 7.5 months. The mean treated tumor volume at the time of GKRS was 6273 $mm^3$ (range, 4.5-27745 mm3) and the median dose delivered to the tumor margin was 22 Gy (range, 20-25 Gy). Local recurrence was assessed in 86 patients (216 lesions) and found to have occurred in 36 patients (83 lesions, 38.6%) with a median time of 6 months (range, 4-16 months). A treated tumor volume >5000 $mm^3$ was significantly correlated with poor local tumor control through a multivariate analysis (hazard risk=7.091, p=0.01). Overall survival was 79.9%, 48.3%, and 15.3% at 6, 12, and 24 months, respectively. The median overall survival was 11 months after GKRS (range, 6 days-113 months). Multivariate analysis showed that the pre-GKRS Karnofsky performance status, leptomeningeal seeding prior to initial GKRS, and multiple metastatic lesions were significant prognostic factors for reduced overall survival (hazard risk=1.94, p=0.001, hazard risk=7.13, p<0.001, and hazard risk=1.46, p=0.046, respectively). Conclusion : GKRS has shown to be an effective and safe treatment modality for treating brain metastases of primary breast cancer. Most metastatic brain lesions initially respond to GKRS, though, many patients have further CNS progression in subsequent periods. Patients with poor Karnofsky performance status and multiple metastatic lesions are at risk of CNS progression and poor survival, and a more frequent and strict surveillance protocol is suggested in such high-risk groups.

• 대한두경부종양학회지
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• 제30권2호
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• pp.62-67
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• 2014

Background and Objectives : To investigate the prognostic factors and effectiveness of radiotherapy for oropharyngeal cancer. Material and Methods : Forty seven patients in oropharyngeal cancer treated with radiotherapy between November 1989 and October 2010. Conventional radiotherapy was performed until July 2007 and conformal radiotherapy was performed since August 2007. Median age of patients was 59. Thirty five patients were males. Nine patients had operation. Patients treated with postoperative radiotherapy were delivered median 60 Gy and patients treated with definitive radiotherapy were delivered median 66 Gy. Median follow-up periods were 51 months. Results : Two year and 5 year overall survival rate was 78.7% and 59.9%. Two year and 5-year locoregional recurrence free survival rate was 82.3% and 72.9%. In subgroup of definitive radiotherapy, at univariate analysis for overall survival, lower N stage(p=0.01), lower stage(p=0.05) and well and moderate differentiation(p=0.001) were statistically significant. At univariate analysis for locoregional recurrence free survival, lower T stage(p=0.02) and better differentiation(p=0.043) were statistically significant. Treatment failure occurred in 12 patients. Locoregional recurrence(8 patients) was main pattern of failure. Conclusion : When definitive radiotherapy compared with postoperative adjuvant radiotherapy, there was no significant difference. Further studies would be needed to compare definitive radiotherapy with postoperative radiotherapy. N stage, stage and differentiation could be the prognostic factors for overall survival and T stage and differentiation could be the prognostic factors for locoregional recurrence free survival in patients treated definitive radiotherapy.