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33 Special Types of Invasive Breast Carcinoma: Diagnostic Criteria ...

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Histopathology<br />

Mucinous carcinoma<br />

• Pure mucinous carcinoma<br />

- Cellular<br />

- Hypocellular<br />

• Epithelial cells have different pattern<br />

• Strands, alveolar nests, cribriform sheets<br />

• Papillary clusters<br />

• Micropapillary clusters<br />

• Large sheets<br />

• Nuclear grade I or II (mBR grade I)<br />

• Typically ER and PR positive<br />

Mucinous ca<br />

Mucinous carcinoma<br />

Mucinous ca<br />

10/8/2011<br />

66

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