SRS is primarily used to treat small-to-medium-sized brain tumors, both benign and malignant. It is particularly effective for treating [metastatic brain tumors](https://en.wikipedia.org/wiki/Metastatic_brain_tumor) that have spread from other parts of the body. Other types of cancer that may be treated with SRS include:
SRS can also be used to treat functional disorders such as [trigeminal neuralgia](https://en.wikipedia.org/wiki/Trigeminal_neuralgia) and [arteriovenous malformations](https://en.wikipedia.org/wiki/Arteriovenous_malformation) (AVMs).