Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking

Sentinel pelvic lymph node dissection (sPLND) enables the targeted removal of lymph nodes (LNs) bearing the highest metastasis risk. In prostate cancer (PCa), sPLND alone or combined with extended PLND (ePLND) reveals more LN metastases along with detecting sentinel LNs (SLNs) outside the convention...

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Autores principales: Svenja Engels, Bianca Michalik, Luca-Marie Meyer, Lena Nemitz, Friedhelm Wawroschek, Alexander Winter
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:fbe89264a0ae46c0a04fdd0fd7bb21fa2021-11-25T17:04:26ZMagnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking10.3390/cancers132258212072-6694https://doaj.org/article/fbe89264a0ae46c0a04fdd0fd7bb21fa2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-6694/13/22/5821https://doaj.org/toc/2072-6694Sentinel pelvic lymph node dissection (sPLND) enables the targeted removal of lymph nodes (LNs) bearing the highest metastasis risk. In prostate cancer (PCa), sPLND alone or combined with extended PLND (ePLND) reveals more LN metastases along with detecting sentinel LNs (SLNs) outside the conventional ePLND template. To overcome the disadvantages of radioisotope-guided sPLND in PCa treatment, magnetometer-guided sPLND applying superparamagnetic iron oxide nanoparticles as a tracer was established. This retrospective study compared the nodal staging ability between magnetometer- and radioisotope-guided sPLNDs. We analyzed data of PCa patients undergoing radical prostatectomy and magnetometer- (848 patients, 2015–2021) or radioisotope-guided (2092 patients, 2006–2015) sPLND. To reduce heterogeneity among cohorts, we performed propensity score matching and compared data considering sentinel nomogram-based probabilities for LN involvement (LNI). Magnetometer- and radioisotope-guided sPLNDs had SLN detection rates of 98.12% and 98.09%, respectively; the former detected more SLNs per patient. The LNI rates matched nomogram-based predictions in both techniques equally well. Approximately 7% of LN metastases were detected outside the conventional ePLND template. Thus, we confirmed the reliability of magnetometer-guided sPLND in nodal staging, with results comparable with or better than radioisotope-guided sPLND. Our findings highlight the importance of the sentinel technique for detecting LN metastases in PCa.Svenja EngelsBianca MichalikLuca-Marie MeyerLena NemitzFriedhelm WawroschekAlexander WinterMDPI AGarticleprostate cancersentinel lymph nodelymphadenectomymetastasessuperparamagnetic iron oxide nanoparticlesradioisotopesNeoplasms. Tumors. Oncology. Including cancer and carcinogensRC254-282ENCancers, Vol 13, Iss 5821, p 5821 (2021)
institution DOAJ
collection DOAJ
language EN
topic prostate cancer
sentinel lymph node
lymphadenectomy
metastases
superparamagnetic iron oxide nanoparticles
radioisotopes
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
spellingShingle prostate cancer
sentinel lymph node
lymphadenectomy
metastases
superparamagnetic iron oxide nanoparticles
radioisotopes
Neoplasms. Tumors. Oncology. Including cancer and carcinogens
RC254-282
Svenja Engels
Bianca Michalik
Luca-Marie Meyer
Lena Nemitz
Friedhelm Wawroschek
Alexander Winter
Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking
description Sentinel pelvic lymph node dissection (sPLND) enables the targeted removal of lymph nodes (LNs) bearing the highest metastasis risk. In prostate cancer (PCa), sPLND alone or combined with extended PLND (ePLND) reveals more LN metastases along with detecting sentinel LNs (SLNs) outside the conventional ePLND template. To overcome the disadvantages of radioisotope-guided sPLND in PCa treatment, magnetometer-guided sPLND applying superparamagnetic iron oxide nanoparticles as a tracer was established. This retrospective study compared the nodal staging ability between magnetometer- and radioisotope-guided sPLNDs. We analyzed data of PCa patients undergoing radical prostatectomy and magnetometer- (848 patients, 2015–2021) or radioisotope-guided (2092 patients, 2006–2015) sPLND. To reduce heterogeneity among cohorts, we performed propensity score matching and compared data considering sentinel nomogram-based probabilities for LN involvement (LNI). Magnetometer- and radioisotope-guided sPLNDs had SLN detection rates of 98.12% and 98.09%, respectively; the former detected more SLNs per patient. The LNI rates matched nomogram-based predictions in both techniques equally well. Approximately 7% of LN metastases were detected outside the conventional ePLND template. Thus, we confirmed the reliability of magnetometer-guided sPLND in nodal staging, with results comparable with or better than radioisotope-guided sPLND. Our findings highlight the importance of the sentinel technique for detecting LN metastases in PCa.
format article
author Svenja Engels
Bianca Michalik
Luca-Marie Meyer
Lena Nemitz
Friedhelm Wawroschek
Alexander Winter
author_facet Svenja Engels
Bianca Michalik
Luca-Marie Meyer
Lena Nemitz
Friedhelm Wawroschek
Alexander Winter
author_sort Svenja Engels
title Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking
title_short Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking
title_full Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking
title_fullStr Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking
title_full_unstemmed Magnetometer-Guided Sentinel Lymph Node Dissection in Prostate Cancer: Rate of Lymph Node Involvement Compared with Radioisotope Marking
title_sort magnetometer-guided sentinel lymph node dissection in prostate cancer: rate of lymph node involvement compared with radioisotope marking
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/fbe89264a0ae46c0a04fdd0fd7bb21fa
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