Skip to main content
An official website of the United States government
Español
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

breast lobule

(brest LAH-byool)
A small part of a lobe in the breast. A breast lobule is a gland that makes milk.
Illustration of the female breast anatomy. On the left, a front view shows lymph nodes inside the breast going from the breast to the armpit. On the right, a cross-section shows the chest wall, ribs, fatty tissue, lobes, ducts, and lobules. Also shown in both panels are the muscle, nipple, and areola.Enlarge this image in new window
The female breast contains lobes, lobules, and ducts that produce and transport milk to the nipple. Fatty tissue gives the breast its shape, while muscles and the chest wall provide support. The lymphatic system, including lymph nodes, filter lymph and store white blood cells that help fight infection and disease.
Search NCI's Dictionary of Cancer Terms