Understanding this cancer
Radioactive seed implantation is a form of brachytherapy in which sealed radioactive sources are placed inside or close to a tumour. The radiation travels only a short distance, allowing a high local dose while limiting exposure to more distant tissue. It is not the same as swallowing radioactive medicine.
Signs to discuss with a doctor
Brachytherapy is selected according to the confirmed cancer, not symptoms alone. It is established in several settings such as prostate, cervical and some other cancers; permanent seed implantation is only one technique and is not suitable for every site.
Risk factors
Risks depend on the organ and can include bleeding, infection, urinary or bowel irritation, pain, seed displacement and radiation injury to nearby tissue. Temporary radiation-safety instructions may apply to close contact after some permanent implants.
Tests and diagnosis
Planning requires confirmed pathology and stage, detailed imaging, review of organ function and precise dose calculation. The radiation oncologist and medical physicist decide source type, position, dose and whether implantation is temporary or permanent.
Treatment approaches
Brachytherapy can be used alone or with external-beam radiotherapy, surgery, hormone therapy, chemotherapy or other treatment depending on cancer type and risk. “Seed implantation” should not be presented as an advanced option without comparing it with standard alternatives.
Prevention and screening
This is a treatment, not a prevention or screening method. Follow-up depends on the treated cancer and may include clinical review, laboratory tests and imaging.
Questions for your care team
Is brachytherapy standard for my exact cancer and stage? Is the implant temporary or permanent? What dose and safety precautions apply? How does it compare with external radiation, surgery and other local treatments?