Breast density among the three major ethnic groups of women in malaysia from a full-field digital mammography system

N Jamal; H S Cheung

N Jamal
H S Cheung

Keywords: Breast density, Ethnic Groups, Digital Mammography

Abstract

ABSTRACT

We carried out a prospective study of breast density Full-Field Digital mammograms performed on 668 Malaysian women from three ethnic groups at a voluntary screening mammographic centre in Kuala Lumpur, Malaysia. Of these women, 259 were Malays (38.8%), 298 were Chinese (44.6%) and 111 were Indians (16.6%). The Tabár breast density classification (I - V) was used to evaluate breast density. A Stepwise multiple regression analysis was used to test for significant difference in breast density for the three ethnic groups. Data was also analyzed using descriptive statistics. We found that Pattern I was seen in 49.4% Malay, 47.3% Chinese and 40.5% Indian women. Predominantly fatty breasts (Patterns II and III) were seen on the mammograms of 36.3% Malay, 11.1% Chinese and 25.2% Indian women. Dense type IV and V patterns were seen in 20.8% Malay, 29.5% Chinese and 42% Indian women. There was no statistically significant difference (p>0.01) in breast density in the three ethnic groups .The breast density reduces with increasing age in all three ethnic groups.

ABSTRAK

Satu kajian mengenai ketumpatan payudara secara prospektif telah dijalankan terhadap 668 mammogram dari system digital mamografi berbidang penuh untuk wanita dari tiga kumpulan etenik utama, di sebuah pusat saringan mamografi sukarela di Kuala Lumpur, Malaysia. Dari jumlah itu, 259 adalah Melayu (38.8%), 298 adalah China (44.6%) dan 111 adalah India (16.6%). Kelasifikasi ketumpatan payudara Tabár (I - V) telah diguna untuk menilai ketumpatan payudara. Analisis regrasi telah diguna untuk menguji perbezaan signigfikan ketumpatan payudara untuk ketiga-tiga kumpulan etenik. Data juga telah dianalisa menggunakan statistik deskriptik. Kami dapati Corak I dilihat untuk 49.4% wanita Melayu, 47.3% China dan 40.5% India. Payudara yang rata-rata mengandungi lemak (Corak II dan III) telah dilihat untuk 36.3% wanita Malayu, 11.1% China dan 25.2% India. Manakala payudara yang padat (Corak IV dan V) telah dilihat untuk 20.8% Malayu, 29.5% China dan 42% India. Tidak terdapat perbezaan signigfikan (p>0.01) ketumpatan payudara untuk ketiga-tiga kumpulan etenik. Ketumpatan payudara berkurangan dengan peningkatan umur untuk ketiga-tiga kumpulan etenik.