Who classification breast part 1


Breast

 



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Ackerman Normal Anatomy

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Normal Anatomy   The breast or mammary gland is covered by skin and subcutaneous  tissue and rests on the pectoralis muscle , from which it is separated  by a fascial layer .  The morphofunctional unit of the breast is a   complex branching structure that is topographically  arranged into  lobes and which is made up of two major components:  terminal  duct–lobular unit ( TDLU ) and the  large duct system . The TDLU is formed by the lobule ,  made up of acini , and the  terminal ductule and represents the  secretory portion of the gland.  The TDLU is recognized by its distinctly lobular architecture ,  the  presence of a mantle ( intralobular stroma ) of specialized,  myxoid-appearing hormone responsive connective tissue, and the  absence of elastic fibers . ETD, Extralobular terminal duct; ITD, intralobular  terminal duct large duct system .  It connects with the subsegmen...
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Who breast classification part2 benign epithelial proliferation

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Benign epithelial proliferations and precursors: Introduction  Usual ductal hyperplasia  Columnar cell lesions, including flat epithelial atypia  Atypical ductal hyperplasia  Adenosis and benign sclerosing lesions: Introduction  Sclerosing adenosis  Apocrine adenosis and adenoma  Microglandular adenosis  Radial scar / complex sclerosing lesion  Adenomas: Introduction  Tubular adenoma  Lactating adenoma  Ductal adenoma  Epithelial-myoepithelial tumours: Introduction  Pleomorphic adenoma  Adenomyoepithelioma  Malignant adenomyoepithelioma Usual ductal hyperplasia Gynecomatsoid hyperplasia Atypical ductal hyperplasia Adenosis sclerosing adenosis Complex  sclerosing lesion  Microglandularadenosis Apocrine adenosis Tubular adenoma  ductal adenoma Lactating adenoma Pleomophic adenoma Adenomyoepithelioma
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