Breast terminal duct

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If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus. The mammary gland is a distinguishing feature of mammals and its primary role is to produce milk to nourish offspring Figures 1. In humans, the breast has a multitude of further roles including being a major female sexual characteristic and a key part of female body image.

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Back in June I started having bleeding from my nipple and found a lump in my breast, my go quickly referred me to the breast clinic where they did a ultrasound on the lump and I was examined by a specialist nurse. They were happy the lump was just glandular tissue and sent me merrily on my way. About the procedure, the recovery, the scaring and the waiting for the results!

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Forward to 3B on benign hyperplasias. Back to 2E on axilla imaging. Before beginning this section on benign non-cancerous conditions of the breast, it is important to emphasize again, that outside the mammographic screening process, any woman should seek advice from her family physician or breast specialist if she has any of the following symptoms :.

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The breast is an organ whose structure reflects its special function: the production of milk for lactation breast feeding. The epithelial component of the tissue consists of lobuleswhere milk is made, which connect to ducts that lead out to the nipple. Most cancers of the breast arise from the cells which form the lobules and terminal ducts.

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Subscribe to our What's New in Pathology newsletter - next issue on Hematopathology coming out soon. Page views in 16, Cite this page: Lategan B.

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Tuesday 27 September Definition : The adult gland forms a tree-like structure starting at the nipple and branching through the stroma to end in lobules. The lobules are the ultimate milk producing functional units of the breast.

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Terminal duct lobular units TDLUs —also referred to as lobules—are epithelial structures within the breast that produce milk during lactation; they are also the primary anatomical source of most breast cancer precursors and cancers. We are conducting molecular epidemiologic studies of TDLU involution, which could provide insights into early carcinogenic events. Quantitative measures of TDLU involution have been annotated on women ages from this repository without any evidence of breast cancer.

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Sylvie Tremblay holds a Master of Science in molecular and cellular biology and has years of experience as a cancer researcher and neuroscientist. Each breast contains a series of milk ducts, which make up a part of breast glandular tissue. These tubes run from the milk-producing breast lobules to the nipple, allowing for lactation and breastfeeding. A dilated duct occurs when the diameter of a single duct increases and fluid builds up in the space, creating a painful fluid-filled cyst, which may be accompanied by abnormal nipple discharge.

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The breast is a modified, specialized apocrine gland located in the superficial fascia of the anterior chest wall Fig. The nipple projects from the anterior surface and is hyperpigmented. It is composed of dense fibrous tissue covered by skin and contains bundles of smooth muscle fibers, which assist with milk expression.

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The breasts are paired structures located on the ventral thorax. The female breast consists of 10—20 lobes that are surrounded by connective and adipose tissue. Each lobe contains milk-producing glandular structures and multiple terminal duct lobular units that form the milk duct system and drain via the major milk ducts and the lactiferous sinuses to the nipple. Lactating lobules produce the breast milk that nourishes many newborns and protects them from infections passive immunity.

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