What percentage of breast cancers are IDC?

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Multiple Choice

What percentage of breast cancers are IDC?

Explanation:
Invasive ductal carcinoma is the most common histologic type of breast cancer, representing the majority of cases. It starts in the ductal system of the breast and then invades surrounding tissue, which is why it shows up so frequently across patients. Because the ducts are widespread, IDC comprises a large share of breast cancers; many references place it around the majority—often cited as roughly 70–85%. Among the given options, the figure closest to this reality is 85%, reflecting that IDC is the dominant form. Invasive lobular carcinoma is the next most common type, making up a smaller fraction, with the remaining subtypes being much rarer.

Invasive ductal carcinoma is the most common histologic type of breast cancer, representing the majority of cases. It starts in the ductal system of the breast and then invades surrounding tissue, which is why it shows up so frequently across patients. Because the ducts are widespread, IDC comprises a large share of breast cancers; many references place it around the majority—often cited as roughly 70–85%. Among the given options, the figure closest to this reality is 85%, reflecting that IDC is the dominant form. Invasive lobular carcinoma is the next most common type, making up a smaller fraction, with the remaining subtypes being much rarer.

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