“…7 Brachytherapy with 125 I seeds has been used as a first-line choice for early prostate cancer. 8 In addition, it provides an alternative approach for the treatment of various other cancers, including colon, cervical, prostate, breast, liver and skin cancers. [9][10][11][12][13] Despite its wide range of application and beneficial outcomes in various types of cancer therapy, the application of brachytherapy in central nervous system (CNS) tumors, such as recurrent malignant gliomas, has been greatly debated.…”