Study for the Medical Council of Canada Qualifying Examination (MCCQE) I. Engage with flashcards and multiple-choice questions with detailed feedback. Prepare confidently!

Multiple Choice

Coarse popcorn-type calcifications in a breast mass are most consistent with which diagnosis?

Coarse popcorn-type calcifications reflect calcification within a benign, aging fibroadenoma. These large, rounded calcifications are classic for fibroadenoma and point to a nonmalignant process, often seen as the lesion slowly involutes and calcifies over time. Invasive ductal carcinoma usually shows suspicious microcalcifications—tiny, pleomorphic, irregular, and clustered or linear—rather than large, popcorn-like ones. While a calcified fibroadenoma can occur and phyllodes tumors may calcify, the popcorn pattern is not their defining feature. Ductal carcinoma in situ tends to have fine, clustered microcalcifications that are small and irregular, not the coarse, popcorn-type appearance.

Coarse popcorn-type calcifications reflect calcification within a benign, aging fibroadenoma. These large, rounded calcifications are classic for fibroadenoma and point to a nonmalignant process, often seen as the lesion slowly involutes and calcifies over time. Invasive ductal carcinoma usually shows suspicious microcalcifications—tiny, pleomorphic, irregular, and clustered or linear—rather than large, popcorn-like ones. While a calcified fibroadenoma can occur and phyllodes tumors may calcify, the popcorn pattern is not their defining feature. Ductal carcinoma in situ tends to have fine, clustered microcalcifications that are small and irregular, not the coarse, popcorn-type appearance.