Özet:

Breast cancer is the most common cancer in women, with an estimated number of new cases not less than 1,050,346 per year. Meanwhile, in North Sumatra in 2019, breast cancer occupied the highest position or 856 cases/incidents of the total number of cancer patients. Efforts to control breast cancer have been carried out by the government of the Republic of Indonesia in particular through the early detection program or BSE. BSE is breast self-examination which aimed to determine the presence or absence of breast cancer in women. This examination performed using a mirror and carried out by women aged 20 years and over. The main indication of BSE was to detect the occurrence of breast cancer by observing the breast from the front, left and right side, whether there were lumps, changes in skin colour, noisy putting and discharge or pus and blood. This research method was descriptive qualitative with 7 informants (subject teachers). This study aimed to determine breast self-examination (BSE) conducted by the Methodist 8 Medan high school teacher. The results showed that all teachers had good knowledge and attitudes about BSE but had fewer actions about BSE. The conclusion of good knowledge and attitudes that teachers have is obtained by obtaining information about BSE through electronic media, namely the internet and fewer actions regarding BSE due to a lack of knowledge to carry out BSE appropriately according to the stages due to the absence of BSE counseling or seminars on BSE.

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