Skin cancers can be effectively treated with which of the following therapy sources?

Brachytherapy sources are effective tools for treating skin cancers due to their ability to deliver radiation directly to the tumor with minimal impact on surrounding healthy tissue. This method involves the placement of radioactive material within or very close to the tumor, allowing for a high dose of radiation to be concentrated in the area requiring treatment.

One of the key benefits of using brachytherapy for skin cancer is that it can be tailored to the specific characteristics of the cancer. Additionally, the low dose rate of brachytherapy can lead to fewer side effects and better cosmetic outcomes for patients, especially in sensitive areas like the face.

In contrast, while high-energy X-rays can treat skin cancers, they are not the only option and may not provide as localized a treatment as brachytherapy. Standard chemotherapy, on the other hand, is generally used for systemic treatment of cancers and is not effective for localized skin cancers. Low-energy beta particles can be used but are limited in their range and efficacy compared to brachytherapy sources, making brachytherapy the preferable choice in this context.