“… 9 , 15 Modern radiotherapy techniques have special abilities to delineate the tumor and spare the organ at risks effectively, which may help to improve tumor coverage and decrease the dose to the normal tissues. 16 , 17 Besides, there are promising new data on the underlying molecular mechanisms of different cancer, which may affect the treatment of these benign tumors with the least side effects. 18 , 19 , 20 , 21 …”