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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-1-19
pubmed:abstractText
As the use of screening mammography expands, the proportion of invasive breast cancer > or = 1 cm is increasing. The aims of this study were: (1) to identify risk factors for systemic metastases in patients with > or = 1 cm invasive breast cancer and (2) to investigate the patient groups at the greatest risk for metastases with such small tumors. Data were collected retrospectively from the breast cancer registry of our institution for patients with invasive breast cancer from October 1994 to December 2004. Of 4,036 patients who received curative breast cancer surgery, we identified 427 patients who had T1a or T1b breast cancer excluding 39 patients who received neoadjuvant chemotherapy. Ipsilateral axillary lymph node involvement was found in 13% (57/427) of patients at the time of surgery. A multivariate analysis was conducted in 370 (T1aN0, T1bN0) patients without lymph node involvement. In a Cox-regression model, HER-2 positive and triple negative (TN) groups were identified as independent risk factors to predict distant relapse-free survival (DRFS) [Hazard ratio (HR) 8.8, P = 0.003 for HER-2 positive group; HR 5.1, P = 0.026 for TN group] in T1bN0 tumors. Statistical significance was not maintained when the analysis was limited to T1aN0 tumors. Even though T1aN0 and T1bN0 tumors have a relatively low risk of systemic failure, antiHER-2-directed therapy for HER-2 group and new innovative adjuvant systemic treatment for TNBC patients with T1bN0 tumors should be considered. Prospective adjuvant trials are warranted in these subgroups of patients.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1573-7217
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
119
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
653-61
pubmed:meshHeading
pubmed-meshheading:19957028-Adult, pubmed-meshheading:19957028-Aged, pubmed-meshheading:19957028-Aged, 80 and over, pubmed-meshheading:19957028-Antineoplastic Agents, pubmed-meshheading:19957028-Breast Neoplasms, pubmed-meshheading:19957028-Chemotherapy, Adjuvant, pubmed-meshheading:19957028-Female, pubmed-meshheading:19957028-Genes, erbB-2, pubmed-meshheading:19957028-Humans, pubmed-meshheading:19957028-Immunohistochemistry, pubmed-meshheading:19957028-In Situ Hybridization, Fluorescence, pubmed-meshheading:19957028-Middle Aged, pubmed-meshheading:19957028-Neoplasm Staging, pubmed-meshheading:19957028-Prognosis, pubmed-meshheading:19957028-Proportional Hazards Models, pubmed-meshheading:19957028-Receptor, erbB-2, pubmed-meshheading:19957028-Receptors, Estrogen, pubmed-meshheading:19957028-Receptors, Progesterone, pubmed-meshheading:19957028-Retrospective Studies, pubmed-meshheading:19957028-Risk, pubmed-meshheading:19957028-Risk Factors
pubmed:year
2010
pubmed:articleTitle
A risk stratification by hormonal receptors (ER, PgR) and HER-2 status in small (< or = 1 cm) invasive breast cancer: who might be possible candidates for adjuvant treatment?
pubmed:affiliation
Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Korea.
pubmed:publicationType
Journal Article