Which statement best describes popcorn calcifications in breast imaging?

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Popcorn calcifications reflect degenerative changes in a benign fibroadenoma. They appear as large, coarse, “popcorn-like” calcifications within a well-circumscribed mass, which is a classic benign finding. This is why the description of coarse calcifications within a fibroadenoma, typically benign, is the best fit. The other ideas don’t match the characteristic appearance or context: popcorn calcifications aren’t small punctate patterns, they aren’t specifically tied to fatty tissue, and they aren’t indicative of malignancy.