作者
Maria Cristina Leonardi, Patrick Maisonneuve, Mauro Giuseppe Mastropasqua, Federica Cattani, Giuseppe Fanetti, Anna Morra, Roberta Lazzari, Federica Bazzani, Mariangela Caputo, Nicole Rotmensz, Marianna Alessandra Gerardi, Rosalinda Ricotti, Viviana Enrica Galimberti, Paolo Veronesi, Samantha Dicuonzo, Giuseppe Viale, Barbara Alicja Jereczek-Fossa, Roberto Orecchia
发表日期
2017/9/1
期刊
International Journal of Radiation Oncology* Biology* Physics
卷号
99
期号
1
页码范围
173-181
出版商
Elsevier
简介
Purpose
To investigate the local outcome of patients after accelerated partial breast irradiation with intraoperative electrons (IORT) for invasive lobular carcinoma (ILC) compared with invasive ductal carcinoma (IDC).
Methods and Materials
From 1999 to 2007, 2173 patients were treated with breast-conserving surgery and IORT (21 Gy/1 fraction) as the sole local treatment: 252 patients with ILC (11.6%) were compared with 1921 patients with IDC in terms of local control.
Results
Compared with the IDC subgroup, patients with ILC had a low-risk profile and were more hormone responsive. The 5- and 10-year in-breast tumor reappearance (IBTR) rates were 5.5% and 14.4%, respectively, for the IDC group and 7.5% and 21.8%, respectively, for the ILC group (log-rank P=.03). The excess risk of IBTR associated with ILC was particularly high for small tumors (≤1 cm: hazard ratio [HR], 2.24; 95% confidence interval [CI], 1 …
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MC Leonardi, P Maisonneuve, MG Mastropasqua… - International Journal of Radiation Oncology* Biology …, 2017