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***Stromal, e.g. [[angiosarcoma]] - quite rare. | ***Stromal, e.g. [[angiosarcoma]] - quite rare. | ||
== | ==Major Pathologic Patterns== | ||
===General classification=== | ===General classification=== | ||
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DDX - PAPILLARY BREAST LESIONS | DDX - PAPILLARY BREAST LESIONS | ||
*Intraductal Papilloms | |||
*Papillary Ductal Carcinoma In Situ | |||
*Intracystic Papillary Breast Carcinoma | |||
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{{familytree/start}} | {{familytree/start}} | ||
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{{familytree | | | | | | | R | | S | | | | | | |R=DCIS in<br>papilloma|S=[[ADH]] in<br>papilloma}} | {{familytree | | | | | | | R | | S | | | | | | |R=DCIS in<br>papilloma|S=[[ADH]] in<br>papilloma}} | ||
{{familytree/end}} | {{familytree/end}} | ||
Notes: | Notes: | ||
*Adapted from ''Mulligan & O'Malley''.<ref>{{cite journal |author=Mulligan AM, O'Malley FP |title=Papillary lesions of the breast: a review |journal=Adv Anat Pathol |volume=14 |issue=2 |pages=108–19 |year=2007 |month=March |pmid=17471117 |doi=10.1097/PAP.0b013e318032508d |url=}}</ref> | *Adapted from ''Mulligan & O'Malley''.<ref>{{cite journal |author=Mulligan AM, O'Malley FP |title=Papillary lesions of the breast: a review |journal=Adv Anat Pathol |volume=14 |issue=2 |pages=108–19 |year=2007 |month=March |pmid=17471117 |doi=10.1097/PAP.0b013e318032508d |url=}}</ref> | ||
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*''FEHUT'' = florid epithelial hyperplasia of the usual type. | *''FEHUT'' = florid epithelial hyperplasia of the usual type. | ||
*''extent'' refers to the size of the abnormal cell population within the papillary lesion. | *''extent'' refers to the size of the abnormal cell population within the papillary lesion. | ||
===Basaloid Lesions=== | |||
*Adenoid Cystic Carcinoma of the Breast | |||
*Medullary Breast Carcinoma | |||
*Medullary-like Breast Carcinoma | |||
Know when to start a discussion about BRCA mutations, triple negativity and the 'basal-like molecular phenotype'. | |||
===Spindle Cell Lesions=== | |||
*Metaplastic Breast Carcinoma | |||
*Mammary Myofibroblastoma | |||
*Phyllodes Tumor - stromal component | |||
=Malignant lesions= | =Malignant lesions= |
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