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At what age early breast cancer is diagnosed?

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Early breast cancer is typically diagnosed in patients aged 40 years and younger, with a median age at diagnosis reported to be around 36 years . However, studies have shown that early breast cancer patients can also be older, with a mean age at diagnosis of 51.2 years and 55.9% of patients being aged 50 years or older . Additionally, a study categorized patients into different age groups, with group Y aged ≤35 years, group M aged >35 and ≤45 years, and group E aged >45 years, showing that very young age (≤35 years) did not independently predict poor prognosis in early-stage breast cancer . Therefore, early breast cancer can be diagnosed across a wide age range, but the median and mean ages reported in the studies suggest that it is often diagnosed in younger individuals.

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Open access•Journal Article•DOI Improved Survival of Young Patients With Breast Cancer 40 Years and Younger at Diagnosis 01 May 2023-JCO global oncology	Early breast cancer is diagnosed in patients aged 40 years and younger, with a median age of 36 years at diagnosis, as reported in the study.
Open access•Journal Article•DOI Do prognosis and clinicopathological features differ in young early-stage breast cancer? Akif Enes Arikan, Halil Kara, Onur Dülgeroğlu, Esin Nur Erdoğan, Emir Çapkınoğlu, Cihan Uras - Show less +5 more 19 Oct 2022-Frontiers in Surgery	Early-stage breast cancer can affect women aged 24 to >70 years, with a study dividing patients into groups Y (≤35 years), M (>35 and ≤45 years), and E (>45 years).
Open access•Journal Article•DOI Prognostic factors influencing prognosis in early breast cancer patients. Safa Najafi, Masoud Sadeghi, Fereshteh Abasvandi, Mohammad Reza Shajari, Kamran Mohebi, Helen Ghandchi - Show less +5 more 01 Jun 2019-Przeglad Menopauzalny 7 Citations	Early breast cancer is typically diagnosed around the age of 51.2 years, with 55.9% of patients being aged 50 years or older at diagnosis, as per the study.
Journal Article•DOI Impact of early mammography screening on time to diagnosis. Cliff W. Rutter, Elisea Avalos-Reyes, Rogelio A. Brito, Chen Liu, Kelly L. Craig, Dorothea J. Verbrugge, Kjel A. Johnson - Show less +6 more 01 Jun 2023-Journal of Clinical Oncology	Early breast cancer is diagnosed at age 40 through early mammography screening, leading to significantly lower incidence rates after 3-, 5-, and 10-year follow-ups compared to on-time screening at age 50.
Journal Article•DOI Improved Survival of Young Patients With Breast Cancer 40 Years and Younger at Diagnosis. Nagi S. El Saghir, Lana E. Khalil, Joud El Dick, Rula W. Atwani, N. Safi, Maya Charafeddine, M Chaccour, Arafat Tfayli, Hazem I. Assi, Jaber Abbas, Zeina Ayoub, Eman Sbaity, Hiba A. Moukadem - Show less +12 more 01 May 2023-JCO global oncology	Early breast cancer is diagnosed in patients aged 40 years and younger, with a median age of 36 years reported in the study.

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How common is early breast cancer?5 answersEarly-onset breast cancer (EOBC) accounts for a significant proportion of breast cancer cases, with studies showing that approximately 20.2% of diagnosed cases are EOBCs, while 79.8% are late-onset breast cancers (LOBCs). Breast cancer is a prevalent issue globally, affecting millions of women each year and being a leading cause of cancer-related deaths among women. In developing countries, up to 20% of breast cancer cases occur in women younger than 40 years, often presenting as aggressive and high-grade tumors with poor survival rates. Detecting breast cancer early is crucial for improving survival rates, with strategies like early diagnosis and screening being essential. The high incidence of breast cancer has led to the implementation of screening programs, emphasizing the importance of early detection for better outcomes.

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