Anticancer research · 2021
The Real-world Outcomes of Patients With Advanced Invasive Lobular Carcinoma of the Breast Compared With Invasive Ductal Carcinoma: A Review at a Single Institution.
Сравнительное исследованиеСтатьяНаблюдательное исследованиеНазвание и аннотация: Перевод пока не подготовлен
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Watanabe Junichiro, Nakamoto Shogo, Sugino Takashi
Аннотация
BACKGROUND: The real-world outcomes of patients with advanced invasive lobular carcinoma (ILC) of the breast are unclear because of its rarity.
PATIENTS AND METHODS: We identified 435 patients with estrogen receptor-positive (ER+), HER2-negative (HER2-) advanced breast cancer treated at our Institute between 2002 and 2019, and analyzed their outcomes retrospectively.
RESULTS: We identified 29 patients with advanced ILC. At presentation, they had a lower rate of lung metastasis (p=0.0053) but a higher rate of stomach metastasis (p=0.0379) compared with other patients with advanced breast cancer. Median overall survival did not differ; however, multivariate analyses showed that ILC histopathology was a risk factor for poorer overall survival (hazard ratio=3.43, p=0.0038) in patients with de novo stage IV ER+ HER2- breast cancer. Patients with ILC showed a markedly different patten of subsequent metastasis, such as less in the lung and more in the stomach, leptomeninges, and bone marrow.
CONCLUSION: According to our retrospective study, in patients with de novo stage IV ER+ HER2- breast cancer, ILC histopathology was associated with increased risk of death.
PATIENTS AND METHODS: We identified 435 patients with estrogen receptor-positive (ER+), HER2-negative (HER2-) advanced breast cancer treated at our Institute between 2002 and 2019, and analyzed their outcomes retrospectively.
RESULTS: We identified 29 patients with advanced ILC. At presentation, they had a lower rate of lung metastasis (p=0.0053) but a higher rate of stomach metastasis (p=0.0379) compared with other patients with advanced breast cancer. Median overall survival did not differ; however, multivariate analyses showed that ILC histopathology was a risk factor for poorer overall survival (hazard ratio=3.43, p=0.0038) in patients with de novo stage IV ER+ HER2- breast cancer. Patients with ILC showed a markedly different patten of subsequent metastasis, such as less in the lung and more in the stomach, leptomeninges, and bone marrow.
CONCLUSION: According to our retrospective study, in patients with de novo stage IV ER+ HER2- breast cancer, ILC histopathology was associated with increased risk of death.