Invasive lobular carcinoma. Definition

Medical Definition: Invasive lobular carcinoma

Cancer that begins in the milk-producing glands (lobules) of the breast and then breaks through the walls of the lobules and invade the nearby fatty tissue. From there, it spread anywhere in the breast. About 15% of invasive breast tumors are invasive lobular carcinomas. It is often difficult to detect by physical examination or by mammography. It is also known as lobular carcinoma.

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