Postoperative Survival and Prognostic Factors in Breast Cancer : a Single Center Analysis of 4,063 Cases

Hyuk Jai Shin; Wonshik Han; Seok Won Kim; Ki Tae Hwang; Sung Eun Hwang; Jeong Eon Lee; Sung-Won Kim; Yeo-Kyu Youn; Seung Keun Oh; Kuk Jin Choe; Dong-Young Noh

doi:10.4048/jbc.2006.9.1.55

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Shin, Han, Kim, Hwang, Hwang, Lee, Kim, Youn, Oh, Choe, and Noh: Postoperative Survival and Prognostic Factors in Breast Cancer : a Single Center Analysis of 4,063 Cases

Original Article

Journal of Breast Cancer

Journal of Breast Cancer 2006; 9(1): 55-60.

Published online: 31 March 2006

DOI: https://doi.org/10.4048/jbc.2006.9.1.55

Postoperative Survival and Prognostic Factors in Breast Cancer : a Single Center Analysis of 4,063 Cases

Hyuk Jai Shin, Wonshik Han, Seok Won Kim, Ki Tae Hwang, Sung Eun Hwang, Jeong Eon Lee, Sung-Won Kim, Yeo-Kyu Youn, Seung Keun Oh, Kuk Jin Choe, Dong-Young Noh

Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.

Corresponding author (dynoh@plaza.snu.ac.kr)

Received 23 August 2005 Accepted 16 February 2006

Abstract

Purpose

The incidence of breast cancer in Korea has been continuously growing and is now the most common cancer in females. The proportion of early stage cancer was found to have increased. A survival analysis and the establishment of prognostic factors are essential for proper management of breast cancer in Korean.

Methods

4063 breast cancer cases operated on Seoul National University Hospital between Jan. 1981 and Dec. 2002, were retrospectively analyzed.

Results

The median age of the patients was 46, with those in their 5th decade being most prevalent. The ratio of breast conservation to mastectomy was also found to be growing. The overall and disease-free survival rates after breast conservation were equivalent to those after a mastectomy. The overall 5- and 10-year survival rates were 85.9 and 71.2%, and those of the disease-free survival rates were 79.5 and 68%, respectively. From a univariate analysis, The tumor size, lymph node status, nuclear grade, histologic grade, hormonal receptor status, C-erbB2, Bcl-2 and an age <35 were found to significantly influence the survival (p < 0.05). From a multivariate analysis, the independent prognostic factors for DFS were T stage (HR=1.5 [95%CI 1.29-1.98]), lymph node status (HR=2.6 [95%CI 2.06-3.41]), nuclear grade (HR=0.6 [95%CI 0.35-0.96]), PR (HR=2.1 [95%CI 1.36-3.44]) and C-erbB2 (HR 1.4 [95%CI 1.02-2.15]). In particular, for node negative patients, only a tumor size>5 cm (HR 2.4 [95%CI 1.15-5.26]) and NG (HR 0.5 [95%CI 0.35-0.93]) were found to be significant prognostic factors.

Conclusion

Since 1991, patients with early breast cancer have progressively increased. To date, there are more patients with early than advanced breast cancer. In addition, BCS has been rapidly increased since 1993. The tumor size, lymph node status, nuclear grade, PR and C-erbB2 were significant prognostic factors of survival in this our study.

Keywords: Breast cancer, Survival, Tumor size, Lymph node status, Prognosis

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