Final answer:
Mammography, an X-ray examination of the breast, is the primary modality used for breast cancer screening. MRI is also used, especially to provide better contrast in dense breast tissues and to avoid radiation exposure. Monthly breast self-exams are also recommended for early detection of changes.
Step-by-step explanation:
The modality used to screen for breast cancer and other breast disorders is primarily mammography, which is an X-ray examination of the breast. Mammograms can detect lumps or areas of increased density, but cannot confirm whether these are malignant; they provide evidence that further examination may be required.
For younger women, mammography can be less effective due to the high density of breast tissue, making contrast more difficult. In addition, there are concerns regarding radiation exposure from X-rays possibly increasing the risk of developing breast cancer.
As a supplemental screening tool, MRI (Magnetic Resonance Imaging) is being used more frequently to improve the accuracy of breast cancer detection and to reduce false positives. MRI does not involve radiation exposure and can offer better contrast in dense breast tissues.
It's important for women to also perform monthly breast self-exams to detect any changes early on. Professional imaging techniques such as mammograms and MRIs, along with self-exams, contribute to the early detection and better outcomes for breast cancer treatment.