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| ==Mammary hamartoma== | | ==Mammary hamartoma== |
| *[[AKA]] ''breast hamartoma''. | | *[[AKA]] ''breast hamartoma''. |
| ===General===
| | {{Main|Mammary hamartoma}} |
| *Benign.
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| *Disordered growth - see ''[[hamartoma]]''.
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| ===Gross===
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| *Well-circumscribed - '''key feature'''.
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| ===Microscopic===
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| Features:<ref name=Ref_BP117>{{Ref BP|117}}</ref>
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| *Disordered arrangement of ductal and lobular structures.
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| *Normal arrangement of cells with in the ductal structures, i.e. myoepithelium and epithelium present.
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| *Variable features:<ref name=surgpath_stan>URL: [http://surgpathcriteria.stanford.edu/breast/mammhamart/ http://surgpathcriteria.stanford.edu/breast/mammhamart/]. Accessed on: 4 October 2011.</ref>
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| *#Adipose tissue - predominant.
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| *#Dense fibrosis tissue - predominant.
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| *#Cystic glandular dilation.
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| Notes:
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| *If adipose tissue predominates; it may be labeled ''adenolipoma''.<ref name=surgpath_stan>URL: [http://surgpathcriteria.stanford.edu/breast/mammhamart/ http://surgpathcriteria.stanford.edu/breast/mammhamart/]. Accessed on: 4 October 2011.</ref>
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| DDx:
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| *[[Fibroadenoma]] - may have adipose tissue.
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| *[[Phyllodes tumour]] - may have adipose tissue.
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| *[[Pseudoangiomatous stromal hyperplasia]].
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| *[[Fibrocystic changes]].
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| Images:
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| *[http://www.breastpathology.info/sub-pages-iotw/2008/18.html Mammary hamartoma (breastpathology.info)].
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| *[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1769817/figure/f2/ Mammary hamartoma (nih.gov)].<ref name=pmid12461066>{{Cite journal | last1 = Tse | first1 = GM. | last2 = Law | first2 = BK. | last3 = Ma | first3 = TK. | last4 = Chan | first4 = AB. | last5 = Pang | first5 = LM. | last6 = Chu | first6 = WC. | last7 = Cheung | first7 = HS. | title = Hamartoma of the breast: a clinicopathological review. | journal = J Clin Pathol | volume = 55 | issue = 12 | pages = 951-4 | month = Dec | year = 2002 | doi = | PMID = 12461066 | PMC = 1769817 | URL = http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1769817/}}</ref>
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| ===IHC===
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| *None - it's a [[H&E]] diagnosis.
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| ==Collagenous spherulosis== | | ==Collagenous spherulosis== |