An example of brachytherapy would be placing a radioactive implant directly into the bladder for bladder cancer insertion of radioactive substances intravenously for thyroid cancer external beam radiation directed at the chest for lung cancer insertion of radioactive substances into the lymphatic system for leukemia

The right option is placing a radioactive implant directly into the bladder for bladder cancer.

Brachytherapy is a procedure for cancer treatment in which radioactive seeds or sources are placed directly into or near the tumor itself. The tumor is given a high radiation dose while reducing the radiation exposure in the surrounding healthy tissues. Brachytherapy is localized, precise, and of high technology. Brachytherapy is used to treat several types of cancer which include breast cancer, cervical cancer, bile duct cancer etc.

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