Page 34 - Petelin, Ana, Nejc Šarabon, Boštjan Žvanut, eds. 2017. Zdravje delovno aktivne populacije ▪︎ Health of the Working-Age Population. Proceedings. Koper: Založba Univerze na Primorskem/University of Primorska Press
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avje delovno aktivne populacije | health of the working-age population 32 drinking, smoking and obesity. Big impact on preventing disease have regular
physical activity and healthy diet (Primic-Žakelj et al., 2003).

Screening test program is the leading measure for detecting BRC around
the world for more than 40 years (Roucco, 2016). In Slovenia, there is a nation-
al screening test program for BRC since 2008, called DORA (Kadivec and Kra-
jc, 2013). All women from 50 and 69 years of age are included in the program
(Državni presejalni program za raka dojk, n. d.).

Breast tissue consists of two types: glandular tissue (milk lobules and
ducts) and fatty tissue. Dense breasts are considered when milk lobules prevails
and there is less fatty tissue (Mayo Clinic, 2015). Dense tissue occurs at half of
women under 50 years and at one third of women over 50 years. Breast density
represents a challenge for radiologists at detecting malignancy, because there is
no possibility to differ individual structures or possible disease changes. Breast
density is divided into 4 stages: (1) almost entirely fatty tissue, (2) scattered
areas of fibroglandular tissue, (3) heterogeneous dense tissue that could cov-
er small masses, (4) very dense tissue – can lower mammography sensitivi-
ty (Hooley, 2017). Patients with dense breasts have more biopsies, more false
positive results and are frequently exposed to radiation (Roucco, 2016). Dense
breast tissue is also a risk factor for BRC (Narula, 2016).

Methods
Descriptive method was used with critical assess of professional and scientific
literature in Slovene and English language. Literature was identified by using
databases Medline, CINAHL, ScienceDirect and Google Scholar. Bool opera-
tors were used. Searching was limited on articles published between 2001 and
2007. Inclusion criteria for literature assess are full articles, articles related to
mammography and younger women. Exclusion criteria are studies considering
women over 50 years of age. We were searching using key words: breast can-
cer, mammography, DORA, younger women, screening, overdiagnosis, ultra-
sound, magnetic resonance. Statistic data was acquired on website of National
Cancer Registry RS. Information about screening program DORA on website
of National screening program for breast cancer. Data gathering took place
from February to May 2017.
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