A City Guide To Chin-yeh for B., Gao, D.L., Ray, R.M. et al Randomized trial of breast self-examination in Shanghai ? final results. Journal of the N ational Cancer Institute, B ack ground While breast self-examination BSE is acknowledged as increasing the detection of cancerous tissue in the breast at an early, treatable stage, the evidence as to subsequent increases in survival among those who have tumours detected and treated following BSE is mixed. A City Guide To Chin-yeh 2016.