Simplified intraoperative sentinel-node detection performed by the urologist accurately determines lymph-node stage in prostate cancer.Kjölhede, Henrik; Bratt, Ola; Gudjonsson, Sigurdur; Sundqvist, Pernilla; Liedberg, Fredrik Link to publication Citation for published version (APA): Kjölhede, H., Bratt, O., Gudjonsson, S., Sundqvist, P., & Liedberg, F. (2015). Simplified intraoperative sentinelnode detection performed by the urologist accurately determines lymph-node stage in prostate cancer. Scandinavian Journal of Urology, 49(2), 97-102. DOI: 10.3109/21681805.2014.968867 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal is currently an extended pelvic lymph node dissection (ePLND), which detects the majority, but not all, of regional lymph node metastases. As an alternative to ePLND, sentinel node (SN) dissection with preoperative isotope injection and imaging has been reported. The objective was to determine whether intraoperative SN detection with a simplified protocol can accurately determine lymph node stage in prostate cancer patients.
Materials and methods:Patients with biopsy-verified high-risk prostate cancer with tumour stage T2-3 were included in the study. All patients underwent both ePLND and SN detection. 99m Tc-marked nanocolloid was injected peritumourally by the operating urologist after induction of anaesthesia just prior to surgery. SNs were detected both in-vivo and ex-vivo intraoperatively using a gamma probe. SNs and metastases and their locations were recorded. Sensitivity and specificity were calculated.Results: At least one SN was detected in 72 (87%) of the 83 patients. In 13 (18%) of these 72 patients SNs were detected outside the ePLND template. In six of these 13 patients, the SNs from outside the template contained metastases, which proved to be the only metastases in two. For 12 patients the only metastatic deposit found was a micrometastasis (≤ 2 mm) in a SN. In the 72 patients with detectable SNs, pathological analysis of the SNs correctly categorised 71 and ePLND 70 patients.
Conclusions:This protocol yielded results comparable to the commonly used technique of SN detection, but with more cases of non-detection.