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| *Abbreviated ''ILC''. | | *Abbreviated ''ILC''. |
| *[[AKA]] ''lobular carcinoma''. | | *[[AKA]] ''lobular carcinoma''. |
| ===General===
| | {{Main|Invasive lobular carcinoma}} |
| *May be associated with a CDH1 mutation - seen in diffuse type [[stomach|gastric]] cancer.<ref>URL: [http://www.asco.org/ascov2/Meetings/Abstracts?&vmview=abst_detail_view&confID=65&abstractID=33006 http://www.asco.org/ascov2/Meetings/Abstracts?&vmview=abst_detail_view&confID=65&abstractID=33006]. Accessed on: 19 April 2011.</ref><ref name=omim192090>{{OMIM|192090}}</ref>
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| ===Microscopic===
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| Features:
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| *"Single file" - cell line-up in a row.
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| **Cell should not be cohesive -- [[lymphoma]] should briefly come to mind.
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| ***primary lymphoma of the breast exists... but it is extremely rare.
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| *NO gland formation.
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| **If it forms glands... it is more likely NST.
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| *May have [[signet ring cell|signet ring]] morphology.
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| *NO [[desmoplastic reaction]], i.e. the stroma surrounding the tumour cells should look benign and undisturbed.
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| Note:
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| *Commonly have low grade nuclear features.
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| ====Images====
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| <gallery>
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| Image:Lobular_carcinoma_-_low_mag.jpg | Lobular carcinoma - low mag. (WC/Nephron)
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| Image:Lobular_carcinoma_-_high_mag.jpg | Lobular carcinoma - high mag. (WC/Nephron)
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| Image:Lobular_carcinoma_-_high_mag.jpg | Lobular carcinoma - very high mag. (WC/Nephron)
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| </gallery>
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| More [[WC]] images:
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| *[http://commons.wikimedia.org/wiki/File:Breast_invasive_lobular_carcinoma_%281%29.jpg Lobular carcinoma - 1 (WC)].
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| *[http://commons.wikimedia.org/wiki/File:Breast_invasive_lobular_carcinoma_%282%29.jpg Lobular carcinoma - 2 (WC)].
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| ====Subclassification====
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| *Classic lobular carcinoma.
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| **Low nuclear grade - NO significant variation of nucleus size.
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| *Pleomorphic lobular carcinoma.
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| **Significant nuclear atypia.
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| Note:
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| *Some pathologist grade lobular carcinoma like other types and avoid the term "pleomorphic lobular carcinoma."<ref>MUA. Jan 22, 2009.</ref>
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| ==Medullary breast carcinoma== | | ==Medullary breast carcinoma== |