左边典型的浸润性导管癌与右边良性纤维腺瘤的肉眼特征的近距离比较。

Here is a side by side comparison of the gross characteristics of a classic infiltrating ductal carcinoma on the left and a benign fibroadenoma on the right.

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如果有实性肿块很有可能是良性病变，比如纤维腺瘤，但是实性病变也有可能是乳腺癌。

A solid-appearing mass most likely is a noncancerous lesion, such as a fibroadenoma, but solid lesions could also be breast cancer.

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而在检测到的肿块中，80%至85%都是良性的，它们通常都是囊肿或是非癌肿瘤，这称为纤维腺瘤。

And among lumps that are detected, 80 to 85% are benign. They're often cysts or noncancerous tumors called fibroadenomas.

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