Unusual Symptoms of Breast Cancer Breast cancer is one of the most common cancers among women in Singapore. In fact, there were an estimated 12,303 new cases of breast cancer diagnosed in the year 2020, and about 400 women died from the disease. According to a study, the risk of developing breast cancer increases with age. About 80% of women diagnosed with breast cancer are over the age of 50. However, breast cancer can occur in women of any age. Early detection is key to successful treatment. If you notice any changes in your breasts, see your breast specialist doctor in Singapore right away.