Incidence trends of invasive and in situ breast cancer among females in Poland during 1999–2014

Paweł Macek; Dana Hashim; Marta Mańczuk; Ewa Błaszkiewicz; Barbara Sosnowska-Pasiarska; Małgorzata Biskup; Halina Król; Jolanta Smok-Kalwat; Stanisław Góźdź

doi:10.5114/ms.2017.72480

eISSN: 2300-6722
ISSN: 1899-1874

Medical Studies/Studia Medyczne

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abstract:

Original paper

**Incidence trends of invasive and in situ breast cancer among females in Poland during 1999–2014**

Paweł Macek

^{1, 2}

,

Dana Hashim

³

,

Marta Mańczuk

⁴

,

Ewa Błaszkiewicz

^{1, 5}

,

Barbara Sosnowska-Pasiarska

⁶

,

Małgorzata Biskup

^{7, 8}

,

Halina Król

^{7, 9}

,

Jolanta Smok-Kalwat

¹⁰

,

Stanisław Góźdź

^{7, 10}

Department of Epidemiology and Cancer Control, Holycross Cancer Centre, Kielce, Poland
Faculty of Medical Sciences, School of Economics, Law, and Medical Sciences, Kielce, Poland
Department of Preventive Medicine, Institute of Translational Epidemiology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, USA
Cancer Primary Prevention Unit, Department of Cancer Epidemiology, The Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Warsaw, Poland
Department of Education, Jan Kochanowski University, Kielce, Poland
Department of Oncocardiology, Holycross Cancer Centre, Kielce, Poland
Faculty of Medicine and Health Sciences, Jan Kochanowski University, Kielce, Poland
Department of Rehabilitation, Holycross Cancer Centre, Kielce, Poland
Department of Didactics and Research, Holycross Cancer Centre, Kielce, Poland
Clinic of Clinical Oncology, Holycross Cancer Centre, Kielce, Poland

Medical Studies/Studia Medyczne 2017; 33 (4): 270–278

DOI: https://doi.org/10.5114/ms.2017.72480

Online publish date: 2017/12/31

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Introduction: Breast cancer is the most common malignant tumour among females worldwide, including low and middle-income countries. It affects 25% of the female population and yearly is diagnosed in 1.5 million women.

Aim of the research: To determine the trends and distributions for invasive and in situ breast cancer incidence rates between 1999 and 2014 in Poland overall and in the voivodeships with the greatest proportion of females aged ≥ 65 years old.

Material and methods: Data for 226,146 invasive (C50) and 7865 in situ (D05) breast cancer incidence (1999–2014) for all females was obtained from published data of the Polish National Cancer Registry (NCR). Age-standardised rates (ASRs) per 10⁵ person-years for all ages of combined females with 95% confidence intervals (CI) were calculated. Joinpoint regression was performed to identify log-linear trends in both invasive and carcinoma in situ incidence rates in the analysed voivodeships and in Poland overall.

Results: The ASRs of both invasive and in situ breast cancers showed increasing trends over the 1999–2014 period, with different patterns between analysed voivodeships. On average, average annual percent changes (AAPCs) varied from 1.6% to 7.9% annually, while in the Świętokrzyskie Voivodeship AAPCs remained below 0.9% annually.

Conclusions: in situ and invasive breast cancer ASRs in Poland increased between 1999 and 2014. The Annual Percentage Change have slowed since 2004 in the analysed voivodeships, but not in Poland overall. It remains uncertain if breast cancer incidence rates will continue to increase or stabilise over time.

keywords:

Incidence trends of invasive and in situ breast cancer among females in Poland during 1999–2014

Paweł Macek 1, 2 , Dana Hashim 3 , Marta Mańczuk 4 , Ewa Błaszkiewicz 1, 5 , Barbara Sosnowska-Pasiarska 6 , Małgorzata Biskup 7, 8 , Halina Król 7, 9 , Jolanta Smok-Kalwat 10 , Stanisław Góźdź 7, 10

breast cancer, incidence, epidemiology, public health

**Incidence trends of invasive and in situ breast cancer among females in Poland during 1999–2014**

Paweł Macek

^{1, 2}

,

Dana Hashim

³

,

Marta Mańczuk

⁴

,

Ewa Błaszkiewicz

^{1, 5}

,

Barbara Sosnowska-Pasiarska

⁶

,

Małgorzata Biskup

^{7, 8}

,

Halina Król

^{7, 9}

,

Jolanta Smok-Kalwat

¹⁰

,

Stanisław Góźdź

^{7, 10}