• Radiation Oncology Journal
• /
• v.15 no.3
• /
• pp.233-241
• /
• 1997

Purpose : This study was done to evaluate the survival rate and Prognostic factors of patients with inoperable non-small cell lung cancer(NSCLC) treated with radiation therapy. Materials and Methods A retrospective analysis was undertaken of 62 Patients who had inoperable NSCLC treated with radiation therapy from January 1991 through December 1993. According to AJCC slaging, stage IIIA was 14 patients and stage IIIB was 48 patients. Forty Gy to 70.2Gy to the primary tumor site was delivered with daily fractions of 1.8Gy or 2Gy, 5days per week. Thirty-seven patients received neoadjuvant chemotherapy. Results : Complete, partial and no response to radiation therapy were 3 patients, 34 Patients and 25 patients, respectively The median survival period of all patients was 11 month. One rear survival rate, 2 year survival rateand 5 rear survival rate for all patients were 45.0%, 14.3%, and 6.0% respectively The median survival period was 6.5 months in stage IIIA and 13 months in stage IIIB. One year survival rates were 28.6% in stage IIIA and 50.3% in stage IIIB In univariaite analysis, prognostic factors affecting survival were T-s1aging, AJCC staging, and response after radiation therapy (P<0.05) . Pretreatment peformance status affected survival but was not statistically significant (0.050.1). In multivariate analysis, Pathology and response to radiation therapy are independently significant prognostic factor. T stage was marginally significant (P=0.0809). During follow-up duration, distant metastasis developed in 20 patients-bone metastasis in 10 patients, brain metastasis in 3 patients, liver mentastasis in 3 patients, contralateral lung metastasis in 1 patients and multiple metastases in 3 patients. Conclusion :　Conventional radiotherapy alone or combined chemoradiotherapy are unlikely to achieve long term survival in patients with NSCLC.　Surgery after concurrent chemoradiotherapy is Ivied to improve the local　control in our hospital

• Radiation Oncology Journal
• /
• v.22 no.3
• /
• pp.192-199
• /
• 2004

Purpose: To determine the patterns on evaluation and treatment in the patient with early breast cancer treated with conservative surgery and radiotherapy and to improve the radiotherapy techiniques, nationwide survey was peformed. Materials and Methods: A web-based database system for korean Patterns of Care Study (PCS) for 6 common cancers was developed. Two hundreds sixty-one randomly selected records of eligible patients treated between 1998$\~$1999 from 15 hospitals were reviewed. Results: The patients ages ranged from 24 to 85 years(median 45 years). Infiltrating ductal carcinoma was most common histologic type (88.9$\%$) followed by medullary carcinoma (4.2$\%$) and infiltrating lobular carcinoma (1.5$\%$). Pathologic T stage by AJCC was T1 in 59.7$\%$ of the casses, T2 in 29.5$\%$ of the cases, Tis in 8.8$\%$ of the cases. Axillary lymph node dissection was peformed I\in 91.2$\%$ of the cases and 69.7$\%$ were node negative. AJCC stage was 0 in 8.8$\%$ of the cases, stage I in 44.9$\%$ of the cases, stage IIa in 33.3$\%$ of the cases, and stage IIb in 8.4$\%$ of the cases. Estrogen and progesteron receptors were evaluated in 71.6$\%$, and 70.9$\%$ of the patients, respectively. Surgical methods of breast-conserving surgery was excision/lumpectomy in 37.2$\%$, wide excision in 11.5$\%$, quadrantectomy in 23$\%$ and partial mastectomy in 27.5$\%$ of the cases. A pathologically confirmed negative margin was obtained in 90.8$\%$ of the cases. Pathological margin was involved with tumor in 10 patients and margin was close (less than 2 mm) in 10 patients. All the patients except one recieved more than 90$\%$ of the planned radiotherapy dose. Radiotherapy volume was breast only In 88$\%$ of the cases, breast+supraclavicular fossa (SCL) in 5$\%$ of the cases, and breast+ SCL+ posterior axillary boost in 4.2%$\%$of the cases. Only one patient received isolated internal mammary lymph node irradiation. Used radiation beam was Co-60 in 8 cases, 4 MV X-ray in 115 cases, 6 MV X-ray in 125 cases, and 10 MV X-ray in 11 cases. The radiation dose to the whole breast was 45$\~$59.4 Gy (median 50.4) and boost dose was 8$\~$20 Gy (median 10 Gy). The total radiation dose delivered was 50.4$\~$70.4 Gy (median 60.4 Gy). Conclusion: There was no major deviation from current standard in the patterns of evaluation and treatment for the patients with early breast cancer treated with breast conservation method. Some varieties were identified in boost irradiation dose. Separate analysis for the datails of radiotherapy planning will be followed and the outcome of treatment is needed to evaluate the process.