Most Breast Cancers
Self Detected By Women Under Age 45 Years
David Lashak /
DGReview 10aug01
Review of:
Patterns and predictors of the breast cancer detection methods in women under
45 years of age (United States)
Cancer Causes and Control 12 (5):431-442, June 2001. [ Abstract
below ]
"Patterns and predictors of the breast cancer detection methods in women
under 45 years of age (United States)" Cancer Causes and Control
Most breast cancers among women under age 45 years are self-detected.
Few factors other than age and prior screening are verified predictors of
method of breast cancer detection.
Researchers in the Division of Cancer Prevention of Control, Centers for
Disease Control, Atlanta, Georgia, and other United States institutions derived
these findings from a study, which examined patterns and predictors of breast
cancer detection methods during 1990-1992 among women aged 20-44.
The researchers observed that few studies had examined the methods by which
breast cancers were detected and only one study on predictors of those methods
had been published.
The researchers obtained interview and medical record data on 1,619 women who
were newly diagnosed with breast cancer in three areas of the US.
Nearly three-quarters (71 percent) of the breast cancers were identified by
self-detection. Nine percent were found by routine clinical breast exam and 20
percent by routine mammography.
Cancers detected by mammography and clinical breast exam, but not those
detected by self-exam, were more likely to be early stage.
Detection by mammography increased with age, and a history of mammography use
was associated with detection by mammography or clinical breast exam.
The researchers report that several commonly studied predictors of screening
use in the US were associated with clinical breast exam detection, but were less
clearly related to or unrelated to mammography detection.
Abstract
Patterns and predictors of the breast cancer detection
methods in women under 45 years of age (United States)
Cancer Causes and Control 12 (5):431-442, June 2001.
Ralph J. Coates
Division of Cancer Prevention and Control, CDC, K-55, 4770 Buford Highway NE,
Atlanta, GA 30341-3717, USA; Ph.: (770) 488-3003; Fax: (770) 488-4639; rjc5@cdc.gov
Robert J. Uhler
Division of Cancer Prevention and Control, CDC, K-55, 4770 Buford Highway NE,
Atlanta, GA 30341-3717, USA; Ph.: (770) 488-3003; Fax: (770) 488-4639
Donna J. Brogan
Department of Biostatistics, Emory University, Atlanta, Georgia 30322, USA
Marilie D. Gammon
Division of Epidemiology, Columbia School of Public Health, New York, New
York 10032, USA
Kathleen E. Malone
Division of Public Health Sciences, Fred Hutchinson Cancer Research Center,
Seattle, Washington, DC 98104, USA
Christine A. Swanson
Division of Cancer Epidemiology and Genetics, National Cancer Institute,
Bethesda, MD 20892, USA
Elaine W. Flagg
Department of Medicine, Emory University, Atlanta, GA 30322, USA
Louise A. Brinton
Division of Cancer Epidemiology and Genetics, National Cancer Institute,
Bethesda, MD 20892, USA
Abstract
Objectives: Few studies have examined methods by which breast cancers are
detected, and only one study has been published on predictors of those methods.
This study examined patterns and predictors of breast cancer detection methods
during 1990–1992 among women age 20–44.Methods: In-person interview
and medical record data were obtained during a population-based case–control
study of 1619 women newly diagnosed with breast cancer in three areas of the
United States (US). Results: Seventy-one percent of the cancers were
identified by self-detection, 9% by routine clinical breast exam (CBE), and 20%
by routine mammography. Cancers detected by mammography and CBE, but not those
detected by breast self-exam, were much more likely to be early-stage. Detection
by mammography increased with age, and a history of mammography use was
associated with detection by mammography or CBE. Several commonly studied
predictors of screening utilization in the US population were associated with
CBE detection, but were less clearly related to or unrelated to mammography
detection. Conclusion: Findings suggest that, during the 1990s in the US,
most breast cancers among women under age 45, including those age 40–44, were
self-detected. Few factors other than age and prior screening are verified
predictors of method of breast cancer detection.
Keywords
breast cancer, detection, mammography, screening, young women
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