Breast cancer radiation showdown: 3D vs internal implants

NCT ID NCT00802711

Terminated Disease control Sponsor: Cancer Trials Ireland Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compared two types of radiation given after breast-conserving surgery for early-stage breast cancer: 3D conformal radiation (external beams) and internal brachytherapy (radioactive material placed in the breast). Only 6 women took part before the trial was stopped early. The goal was to see which method delivers radiation more effectively with fewer side effects, but the small size means no firm conclusions can be drawn.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: radiation therapy (3D conformal or brachytherapy)
What this could lead to: If successful, this could help determine which radiation method after breast surgery is better at preventing cancer return while reducing side effects.
What could go wrong: This trial was terminated early with only 6 participants, so results are very limited and may not apply to others. The small size means we cannot draw reliable conclusions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

breast cancer breast ductal adenocarcinoma breast neoplasm invasive ductal breast carcinoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

BREAST CANCER

Contacts and locations

Locations

Saint Luke's Radiation Oncology Network

Dublin, 6, Ireland

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