Which projections can be combined to determine whether calcifications are benign?

The combination of lateral medial (LM) and medial lateral (ML) projections is particularly effective for assessing calcifications in mammography. Each projection offers a distinct perspective of the breast tissue, allowing for a more thorough evaluation of the characteristics of the calcifications.

The LM projection gives a side view that can reveal the depth and orientation of calcifications, while the ML projection provides an additional viewpoint that can confirm their location, shape, and potential grouping. By analyzing both projections, radiologists can gain critical insights into whether the calcifications are likely to be benign, based on their morphology, distribution, and relationship to fibroglandular tissue.

Using this dual approach enhances diagnostic accuracy, as certain benign calcifications, like those associated with ductal ectasia or fibroadenomas, may appear consistently in these projections. Recognizing patterns such as these is crucial in determining whether further investigation is warranted, ultimately contributing to better patient outcomes.

The other projection combinations do not provide the same comprehensive view of calcifications as the LM and ML projections do. This makes the selected combination the optimal choice for assessing the nature of calcifications.