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- W2018454984 abstract "Introduction: Infiltrating lobular carcinoma (ILC) is the second most common histological type of invasive breast cancer (IBC) and accounts for 10% of all IBCs. ILC differs from IDC in many respects including age of patients, tumor size and increased frequency of multifocality and bilaterality. But, the outcome of ILC remains unclear. Therefore, we studied the clinical features and prognosis of patients with ILC and infiltrating ductal carcinoma (IDC). Methods: We analyzed data from 3716 breast cancer pts who were were treated at the Yonsei University Health System between 1984 and 2005. Median follow time is 74 months. The patients were categorized as having ILC or IDC. Results: 95(2.3%) tumors were classified as ILC, 3621 (89.4%) as IDC. In analysis there were no differences of age, tumor size, nodal status and stage between ILC and IDC. However, patients with ILC were significantly more likely to have estrogen positive (79.7% for ILC vs 62.6% for IDC, p=0.003) and HER-2 negative tumors (83.6% for ILC vs 70.8% for IDC, p=0.038) compared to patients with IDC. The frequency of bilateral breast cancers was higher for patients with ILC than for patients with IDC (ILC: 6.8% vs. IDC: 3.5%, p=0.013). The systemic recurrence and local recurrence rates for ILC were similar to IDC. However, the sites of systemic recurrence were different. IDC more commonly metastasized lung than IDC (36.5% for IDC vs 9.1% for ILC). ILC more commonly metastasized to bone and the ovaries than IDC (bone: 72.7% for ILC vs 36.5 % for IDC, ovary: 18.2% for ILC vs 0% for IDC). there were no statistically significant differences in DFS and OS between ILC and IDC. The 5-year DFS was 87.6% for ILC and 78.7% for IDC.(p=0.174) The 5-year OS was 93.6% for ILC and 85.5% for IDC.(p=0.104) Conclusion: In the results of this study, the incidence of ILC was quite low in Korean breast cancer patients. ILC showed different histologic features as bilateral involvement, ER positivity, HER-2 negativity and systemic recurrence sites compared to IDC. But the prognosis of ILC was similar to that of IDC. Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 3036." @default.
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- W2018454984 date "2009-12-15" @default.
- W2018454984 modified "2023-09-22" @default.
- W2018454984 title "Clinical and Prognostic Features of Infiltrating Lobular Carcinoma of the Breast in a Korean Series." @default.
- W2018454984 doi "https://doi.org/10.1158/0008-5472.sabcs-09-3036" @default.
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