What is the most common breast malignancy?

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Multiple Choice

What is the most common breast malignancy?

Explanation:
Most breast cancers arise as invasive ductal carcinoma. It starts in the ducts and then invades surrounding tissue, which is why it’s classified as invasive. This histologic type makes up the majority of malignant breast tumors—roughly the largest share of invasive cancers. Ductal carcinoma in situ is noninvasive and stays within the ducts, so it’s considered a precursor lesion rather than the most common invasive cancer. Lobular carcinoma is less common, and medullary carcinoma is rare. Therefore, invasive ductal carcinoma is the most common breast malignancy.

Most breast cancers arise as invasive ductal carcinoma. It starts in the ducts and then invades surrounding tissue, which is why it’s classified as invasive. This histologic type makes up the majority of malignant breast tumors—roughly the largest share of invasive cancers. Ductal carcinoma in situ is noninvasive and stays within the ducts, so it’s considered a precursor lesion rather than the most common invasive cancer. Lobular carcinoma is less common, and medullary carcinoma is rare. Therefore, invasive ductal carcinoma is the most common breast malignancy.

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