Internal Mammary Nodal Chain Drainage Is a Prognostic Indicator in Axillary Node-Positive Breast Cancer |
| |
Authors: | Michelle S Yao Brenda F Kurland Anne H Smith Erin K Schubert Lisa K Dunnwald David R Byrd David A Mankoff |
| |
Institution: | (1) Departments of Radiation Oncology, University of Washington Medical School, Seattle, WA, USA;(2) Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA;(3) Internal Medicine, University of Washington Medical School, Seattle, WA, USA;(4) Nuclear Medicine, University of Washington Medical School, Seattle, WA, USA;(5) Surgery, University of Washington Medical School, Seattle, WA, USA |
| |
Abstract: | Background Internal mammary (IM) nodes are a potential site of breast lymphatic drainage. We examined the relationship between lymphoscintigraphic
evidence of IM drainage and survival in early-stage breast cancer patients (pts).
Methods From a prospective database of 855 consecutive sentinel node mapping procedures using peritumoral radiocolloid injection from
1996–2004, we analyzed the 604 cases with stage I–III breast cancer. Overall survival and recurrence-free survival (OS, RFS)
rates were compared in pts with (IM+) and without (IM-) IM drainage on lymphoscintigraphy using Kaplan-Meier plots and Cox
proportional hazards models. Results: 100 of 604 pts (17%) showed IM drainage. Five-year OS and RFS were 92% vs 88% and 88%
vs 85% in IM- vs IM+ pts. In the 186 pts with axillary metastases (node+), 5-year OS and RFS were 91% vs 71% and 84% vs 69%
in IM- vs IM+ pts. Univariate analysis of node+ pts estimated increased mortality risk for IM+ (hazard ratio, HR 2.9, P = .04), ≥4 positive nodes (HR 3.2, P = .02), tumors that were ER-negative (HR 3.4, P = .02), or had high Ki-67 (HR 6.8, P = .01). Multivariate analysis estimated similar increased risks ≥4 nodes (HR 4.0, P = .02), IM+ (HR 3.3, P = .06), and ER negativity (HR 2.6, P = .09)].
Conclusions IM nodal drainage predicted a nearly 3-fold increased mortality risk in node+ pts. Peritumoral radiocolloid injection provides
a clinically relevant assessment of IM drainage and should be prospectively tested for its value in tailoring treatment strategies
for axillary node-positive pts.
Presented at the 29th Annual San Antonio Breast Cancer Symposium, December 14–17, 2006. |
| |
Keywords: | Breast cancer Internal mammary Survival Lymphoscintigraphy Sentinel lymph node |
本文献已被 PubMed SpringerLink 等数据库收录! |
|