What does Breast, infiltrating lobular carcinoma of the mean?

Breast, infiltrating lobular carcinoma of the meaning in Medical Dictionary

the next most frequent invasive breast cancer. Infiltrating lobular carcinoma begins within the lobules, the glands that secrete milk, after which infiltrates surrounding tissue. Lobular carcinoma can happen in more than one website inside breast or in both breasts at the same time (a bilateral lobular carcinoma).