Author

Burcu Zihni

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Open access Oct 2026

Competing Mortality, Not Breast-Cancer Mortality, Explains the Survival Deficit of Breast Cancer After a Prior Non-Breast Cancer: A SEER Competing-Risks Analysis

Background and Objectives: Women who develop breast cancer after a previous cancer of another site have poorer overall survival, yet it is unsettled whether the breast cancer itself is more lethal or whether the deficit reflects competing causes of death in an older, previously treated population. We decomposed this su...

Ismail Zihni, Burcu Zihni, İmren Mutlu et al. · Medicina · 0 citations

Open access Aug 2026

Circulatory and other-cause mortality after neoadjuvant versus adjuvant chemotherapy in women with stage II-III breast cancer.

In older long-term breast-cancer survivors, late mortality is predominantly multimorbid rather than circulatory-dominant, supporting survivorship care that addresses cardiovascular risk within a broader framework of age-related competing health risks.

Burcu Zihni, İsmail Zİhnİ, M. Z. Sabuncuoğlu · Biomolecules & biomedicine · 0 citations

Open access Jul 2026

Cardiovascular versus breast cancer mortality in men with breast cancer: An age-stratified SEER competing-risk study.

In men with non-metastatic breast cancer, cardiovascular cumulative incidence overtakes that of breast cancer early after diagnosis in the oldest patients, which support age-aware cardiovascular attention during survivorship but do not establish that intensified cardiovascular surveillance improves outcomes.

İsmail Zİhnİ, Burcu Zihni, M. Z. Sabuncuoğlu · Biomolecules & biomedicine · 0 citations