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Updated: Jul 28, 2026
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Stereotactic Radiosurgery for Gynecologic Cancer
Published on: April 17, 2012
External beam radiotherapy for synchronous rectal and prostatic tumors
1Department of Urology, Stanford University Medical Center, Stanford, California, USA.
Urology
|April 18, 2001
Summary
Synchronous rectal and prostate tumors can be effectively treated with a modified radiotherapy plan. This approach led to no rectal tumor recurrence and reduced prostate-specific antigen levels in patients.
Area of Science:
- Oncology
- Radiation Oncology
Background:
- Rectal and prostate cancers can occur synchronously.
- Accurate staging and understanding tumor proximity are crucial for treatment planning.
Observation:
- Two patients presented with large rectal tumors and localized prostate cancer.
- Elevated prostate-specific antigen (PSA) levels were noted at diagnosis (7.9 ng/mL and 9.0 ng/mL).
Findings:
- A modified three-dimensional conformal radiotherapy plan was developed to target both synchronous tumors.
- Patients achieved no evidence of rectal tumor recurrence post-therapy.
- Post-treatment PSA levels decreased significantly (0.5 ng/mL and 0.7 ng/mL at 1-2 years).
Implications:
- This demonstrates the feasibility of effective pelvic irradiation for combined rectal and prostate malignancies.
- Modified conformal radiotherapy offers a viable treatment strategy for synchronous pelvic cancers.
- The findings support the potential for improved outcomes in patients with these co-occurring diagnoses.
