Adenoid cystic carcinoma of the breast in the United States (1977 to 2006): a population-based cohort study
| Autor: | Rochelle E. Curtis, Mark M. Huycke, Bassam Ghabach, William F. Anderson, Jackie A. Lavigne, Graça M. Dores |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Oncology
Adult medicine.medical_specialty Adolescent Adenoid cystic carcinoma Population Breast Neoplasms White People Cohort Studies Young Adult Breast cancer Internal medicine medicine Carcinoma Humans education Survival analysis Aged Medicine(all) education.field_of_study Relative survival business.industry Incidence (epidemiology) Incidence Middle Aged medicine.disease Carcinoma Adenoid Cystic Survival Analysis Confidence interval United States Black or African American Female business SEER Program Research Article |
| Zdroj: | Breast Cancer Research : BCR |
| ISSN: | 1465-542X |
| DOI: | 10.1186/bcr2613 |
| Popis: | Introduction Adenoid cystic carcinoma of the breast (breast-ACC) is a rare and special type of basal-like tumor for which scant population-based descriptive data exist. We sought to provide new population-based information on breast-ACC incidence, relative survival, and associated cancer risk in the United States. Methods Using data from the Surveillance, Epidemiology and End Results Program, we calculated age-adjusted incidence rates (IRs), IR ratios (IRRs), and relative survival for breast-ACC, and standardized incidence ratios (SIRs) for other cancers. Results Overall 338 women (IR = 0.92/1 million person-years) were diagnosed with breast-ACC during 1977 to 2006. Blacks had 39% lower IRs than Whites (IRR = 0.61, 95% confidence interval = 0.37 to 0.96), and IRs remained constant over the 30-year period. Ninety-five percent of cases presented with localized stage (n = 320; IR = 0.87), and the highest IRs were observed for estrogen receptor (ER)-negative/progesterone receptor (PR)-negative tumors (IR = 0.56). Like other typically ER-negative tumors, age-specific IRs increased until midlife and then plateaued. Five-year, 10-year, and 15-year relative survival was 98.1%, 94.9%, and 91.4%, respectively. The risk of female breast cancer was not increased following (SIR = 0.89, 95% confidence interval = 0.43 to 1.64) or preceding (SIR = 0.71, 95% confidence interval = 0.28 to 1.46) breast-ACC. Similarly, no association was observed for breast-ACC and risk of all other cancers combined, solid tumors, or lymphohematopoietic malignancies. Conclusions Breast-ACC among women is characterized by ER-negative/PR-negative expression, rare regional lymph node involvement, a favorable prognosis with excellent survival, and absence of associated cancers. These findings reinforce the importance of tailored treatments for breast-ACC and lend credence to the apparent heterogeneity of basal-like breast cancers. |
| Databáze: | OpenAIRE |
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