Invasive lobular carcinoma
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Invasive lobular carcinoma | |
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File:Breast invasive lobular carcinoma (2).jpg
Invasive lobular carcinoma demonstrating a predominantly lobular growth pattern
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Classification and external resources | |
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ICD-O | M8520/3 |
Patient UK | Invasive lobular carcinoma |
Invasive lobular carcinoma accounts for 5-10% of invasive breast cancer.[1][2]
The histologic patterns include:[3][4][5]
Type | Prevalence | Description |
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Classical | 40% | round or ovoid cells with little cytoplasm in a single-file infiltrating pattern, sometimes concentrically giving a targetoid pattern |
Alveolar | 5% | Aggregates of classical-appearing cells |
Solid | 10% | Sheets of classical-appearing cells with little intervening stroma |
Tubulolobular | 5% | Cells form microtubules in >90% of tumor (smaller than in tubular carcinoma) |
Pleomorphic | Classical-appearing but with pleomorphic cells | |
Mixed | 40% | No dominant pattern |
Overall, the five-year survival rate of invasive lobular carcinoma was approximately 85% in 2003.[6]
Loss of E-cadherin is common in lobular carcinoma but is also seen in other breast cancers.[7]
Treatment includes surgery and adjuvant therapy.
References
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- ↑ Fletcher's diagnostic histopathology of tumors. 3rd Ed. p. 931-932.
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