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[Sentinel lymph node diagnosis in prostatic carcinoma: I: Method and clinical evaluation]
H Vogt1, F Wawroschek, H Wengenmair
1Klinik für Nuklearmedizin, Klinikum Augsburg, Deutschland.
Nuklearmedizin. Nuclear Medicine
|May 7, 2002
Summary
Sentinel lymph node (SLN) evaluation using lymphoscintigraphy and gamma probe measurement is effective for identifying lymph node metastasis in prostate cancer patients. This technique offers superior accuracy compared to standard pelvic lymphadenectomy.
Area of Science:
- Urology
- Nuclear Medicine
- Oncology
Background:
- Accurate staging of prostate cancer is crucial for treatment planning.
- Identifying lymph node metastasis is essential for determining prognosis and guiding therapy.
- Sentinel lymph node evaluation offers a targeted approach to staging.
Purpose of the Study:
- To assess the efficacy of lymphoscintigraphy and intraoperative gamma probe measurement in identifying sentinel lymph nodes (SLNs) in prostate cancer.
- To compare the accuracy of SLN biopsy with standard pelvic lymphadenectomy.
Main Methods:
- 117 prostate cancer patients underwent ultrasound-guided transrectal intraprostatic injection of 99mTc-Nanocoll.
- Scintigrams were acquired, and SLNs were localized intraoperatively using a gamma probe.
- Pelvic lymph node dissection followed SLN removal.
Main Results:
- SLNs were successfully localized intraoperatively in 113 out of 114 patients (99.1%).
- Lymph node metastasis was detected in 28 patients (23.9%).
- SLN biopsy correctly identified metastasis in 25 cases, with 15 cases showing metastasis exclusively in the SLN.
Conclusions:
- Sentinel lymph node evaluation, combining lymphoscintigraphy and intraoperative gamma probe measurement, is a reliable method for detecting lymph node metastasis in prostate cancer.
- SLN biopsy demonstrates superiority over conventional pelvic lymphadenectomy for accurate staging.
