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Stereotactic Gamma Ray Surgery for Extracranial Lesions and Tumors

Medically reviewed by Last updated on Jun 5, 2024.

This surgery is used to treat lesions and tumors in areas such as your organs, spine, or prostate. They can be benign (not cancer) or malignant (cancerous). Beams of radiation kill the tumor cells. Normal tissues near the tumor get little or no radiation. You may have 1 treatment using high-energy beams, or many treatments using weaker beams.


Call your local emergency number (911 in the US) if:

Seek care immediately if:

Call your doctor or surgeon if:

Follow up with your doctor or surgeon as directed:

Ask if and when you need to return for more gamma ray treatments. Write down your questions so you remember to ask them during your visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.