Background Fibroglandular breast tissue appears dense on mammogram, whereas fat
appears nondense. It is unclear whether absolute or percentage dense area more strongly …

Background Screening with mammography has been shown by randomized controlled
trials to reduce breast cancer mortality in women aged 40 to 74 years. Estimates from …

It is essential to quantify the impacts of the COVID-19 pandemic on cancer screening, including
for vulnerable sub-populations, to inform the development of evidence-based, targeted …

Early detection of breast cancer through screening reduces breast cancer mortality. The
benefits of screening must also be considered within the context of potential harms (eg, false …

This Ontario province-wide cohort study was conducted to compare the risk of adverse
pregnancy outcomes in female childhood cancer survivors who received abdominal-pelvic …

Purpose The Ontario Breast Screening Program expanded in July 2011 to screen women
age 30 to 69 years at high risk for breast cancer with annual magnetic resonance imaging (MRI…

An exploratory case-control study of childhood brain tumors was conducted in southern
Ontario between 1977 and 1983, on 74 cases and 138 age- and sex-matched population …

Background Mammographic density (MD) is one of the strongest breast cancer risk factors.
Its age-related characteristics have been studied in women in western countries, but whether …

Background Few studies have compared the prognostic value of tumor characteristics by type
of breast cancer diagnosed in the interval between mammographic screenings with screen…

Purpose: Mammographic density is a strong and highly heritable risk factor for breast cancer.
The purpose of this study was to examine the extent to which mammographic density …