Which view best demonstrates tissue in the upper outer quadrant of the breast?

• A. Lateral view
• B. Medial view
• C. CC view
• D. MLO view

Answer: (D)

The main idea being tested is which mammography projection most effectively images tissue in a specific breast region. The upper outer quadrant lies toward the outer and upper part of the breast, with the tail of Spence extending toward the axilla. The mediolateral oblique view uses an oblique angle that brings the outer upper portion and the axillary tail into view, capturing that quadrant more completely in a single image. Other views are oriented more toward medial or lateral aspects or different orientations, so they don’t visualize the upper outer quadrant as fully. For this reason, the view that best demonstrates tissue in the upper outer quadrant is the MLO projection.