Published online Dec 31, 2009.
https://doi.org/10.4048/jbc.2009.12.4.316
The Influence of Breast Volume on Prognosis of Primary Breast Cancer with Same T Stage
Abstract
Purpose
The aim of this study was to evaluate the prognostic significance of the breast volume in primary breast cancer patients with the same T stage.
Methods
The study population consisted of 358 patients with T1 and T2 primary breast cancer, who underwent preoperative mammography and surgery in our institution from March 1992 to December 2006. The patients were divided into three groups based on the calculated breast volume as the following: Group A: <285 cc (n=117), Group B: 285-460 cc (n=121) and Group C: ≥460 cc (n=120). Overall survival (OS) and disease free survival (DFS) of the patients in the three groups in each T stage were analyzed.
Results
The mean age was 46.3 years (age range, 22-85 years) and the mean calculated breast volume was 403.1 cc (volume range, 94-1,231 cc). As the age of patients was increased, the breast volume was increased (r=0.184, p<0.001). With a mean follow up period of 80.8 months, there was no significant difference in DFS or OS among patients in Groups A, B, and C (p>0.05). For patients with T1 stage disease, Group A patients showed the highest DFS and OS, and patients in Group C showed the lowest DFS and OS; however, the difference was not statistically significant (p>0.05). For patients with T2 disease, patients in Group C showed the highest DFS and OS, though the difference with the two other groups did not have statistical significance (p>0.05).
Conclusion
The breast volume was not a significant predictor of DFS and OS for patients with T1 and T2 breast cancer. However it should be noted that this was the first study to evaluate the correlation between breast volume and survival in breast cancer patients.
Figure 1
C=compression thickness; H=posterior-to-anterior height; W=medial-to-lateral width.
The breast volume is calculated by use of the formula for the volume of a half-elliptic cylinder as derived from a craniocaudal view from a mammogram.
Figure 2
Bivariate correlation analysis between breast volume (as determined by mammogram) and patient's age (A) and body mass index (B). (A) There was only a weak correlation between breast volume and patient's age. (B) There was a strong correlation between breast volume and body mass index.
Figure 3
Disease-free survival and overall survival curve according to breast volume. There were no significant survival differences.
Figure 4
Disease-free survival and overall survival curve of T1 (A, B) and T2 (C, D) breast cancer patients according to breast volume. There were no significant survival differences in all subgroups.
Table 1
Characteristics of the patients
Table 2
p-values of breast volume related overall survival rate and disease free survival rate
Table 3
p-values of breast volume related overall survival rate and disease free survival rate in patients with normal range of body mass index
Table 4
The relation of breast volume with prognostic factor of breast cancer
References
-
Hoe AL, Mullee MA, Royle GT, Guyer PB, Taylor I. Breast size and prognosis in early breast cancer. Ann R Coll Surg Engl 1993;75:18–22.
-
-
Scutt D, Manning JT, Whitehouse GH, Leinster SJ, Massey CP. The relationship between breast asymmetry, breast size and the occurrence of breast cancer. Br J Radiol 1997;70:1017–1021.
-
-
Fisher B, Slack NH. Number of lymph nodes examined and the prognosis of breast carcinoma. Surg Gynecol Obstet 1970;131:79–88.
-
-
Crowe JP Jr, Gordon NH, Hubay CA, Shenk RR, Zollinger RM, Brumberg DJ, et al. Estrogen receptor determination and long term survival of patients with carcinoma of the breast. Surg Gynecol Obstet 1991;173:273–278.
-
-
Contesso G, Mouriesse H, Friedman S, Genin J, Sarrazin D, Rouesse J. The importance of histologic grade in long-term prognosis of breast cancer: a study of 1,010 patients, uniformly treated at the Institut Gustave-Roussy. J Clin Oncol 1987;5:1378–1386.
-
-
Fisher ER, Sass R, Fisher B. Pathologic findings from the National Surgical Adjuvant Project for Breast Cancers (protocol no. 4). X. Discriminants for tenth year treatment failure. Cancer 1984;53 3 Suppl:712–723.
-
-
Nixon AJ, Neuberg D, Hayes DF, Gelman R, Connolly JL, Schnitt S, et al. Relationship of patient age to pathologic features of the tumor and prognosis for patients with stage I or II breast cancer. J Clin Oncol 1994;12:888–894.
-
-
Andrulis IL, Bull SB, Blackstein ME, Sutherland D, Mak C, Sidlofsky S, et al. Toronto Breast Cancer Study Group. neu/erbB-2 amplification identifies a poor-prognosis group of women with node-negative breast cancer. J Clin Oncol 1998;16:1340–1349.
-
-
Lesar M, Stanec M, Banovic M. Significance of the relative size of a breast tumor in deciding the method of surgical treatment. Tumori 2006;92:18–20.
-
-
Hyndman RJ, Fan Y. Sample quantiles in statistical packages. Am Stat 1996;50:361–365.
-
-
Riedl CC, Ponhold L, Flöry D, Weber M, Kroiss R, Wagner T, et al. Magnetic resonance imaging of the breast improves detection of invasive cancer, preinvasive cancer, and premalignant lesions during surveillance of women at high risk for breast cancer. Clin Cancer Res 2007;13:6144–6152.
-