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°íÀ§Çè À¯¹æ¾Ï ȯÀÚÀÇ ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á Postoperative Radiation Therapy in High-risk Breast Cancer

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ÀÌ°æÀÚ/Kyung Ja Lee

Abstract

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Purpose: To assess the locoregional recurrence rate, survival rate and prognostic factors after modified radical mastectomy and postoperative adjuvant radiation therapy with or with chemotherapy in high-risk breast cancer patients.
Methods: Between 1984¡­1995, 48 patients underwent postoperative irradiation to the regional lymphatics and chest wall due to large tumor size (¡Ã5 §¯) or small tumor size (<5 §¯) with axillary lymph node involvement after modified radical
mastectomy. The median age of the patients was 47 years (range, 31¡­79 years). The clinical tumor size was <2 §¯ in 1 patient, 2¡­5 §¯ in 15 patients, and >5 §¯ in 32 patients. Thirty two patients had positive axillary lymph nodes. Forty two
patients
were irradiated to the chest wall and regional lymph node and 6 patients were irradiated in the chest wall only. Radiation dose to the chest wall and regional lymph node was 5040 cGy/28 fraction. The median follow-up time was 61 months.
Results:
Locoregional recurrence rate was 8% and distant metastatic rate was 14%. The actuarial overall survival rate and disease-free survival rate was 63% and 62% at 5 years, respectively. The median survival time was 67 months. Five-year overall
survival
rate
by the stage is 70% in ¥±B and 58% in ¥²A. The significant prognostic factor for survival on multivariate analysis was the stage. Conclusion: Postoperative adjuvant radiation therapy in high-risk breast cancer can reduce the locoregional
recurrence rate and increase the survival time by combined chemotherapy. The significant prognostic factor for survival rate was the stage.

Å°¿öµå

À¯¹æ¾Ï; º¯Çü ±ÙÄ¡Àû À¯¹æÀýÁ¦¼ú; ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á; Breast Cancer; Modified Radical Mastectomy; Postoperative Radiation Theray;

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