Interstitial radiation techniques may be used when indicated.

Selected tumors are also suitable for interstitial radiation therapy.

This is called brachytherapy, internal radiation, or interstitial radiation.

Other local ablative techniques that have been used to manage liver metastases include embolization and interstitial radiation therapy.

Interstitial radiation therapy.

Supplementation with interstitial radiation sources may be necessary to achieve adequate doses to large primary tumors and/or bulky nodal metastases.

External-beam radiation therapy with or without interstitial radiation therapy should be considered postoperatively for larger lesions.

External-beam radiation therapy or interstitial radiation therapy or a combination of both (T1, T2 lesions).

Selected patients may be retreated with moderate-dose external-beam radiation therapy using limited ports and an intracavitary or interstitial radiation boost to the site of recurrence.

Curran WJ Jr, Littman P, Raney RB: Interstitial radiation therapy in the treatment of childhood soft-tissue sarcomas.

"If radiation was not given previously, recurrences that are confined to the pelvis may be treated with external beam radiation with chemotherapy and intracavitary or interstitial radiation therapy.

But Dr. William R. Shapiro of the Barrow Clinic in Phoenix, an expert on brain tumors, said, "With few exceptions, low-grade astrocytomas are not treated with interstitial radiation."

For large lesions and more invasive lesions (stage A and stage B, T1 and T2, respectively), interstitial radiation therapy or a combination of interstitial radiation therapy and external-beam radiation therapy is an alternative to surgical resection of the distal third of the urethra.