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van Leeuwen FWB, Buckle T, Rietbergen DDD, van Oosterom MN. The realization of medical devices for precision surgery - development and implementation of ' stop-and-go' imaging technologies. Expert Rev Med Devices 2024; 21:349-358. [PMID: 38722051 DOI: 10.1080/17434440.2024.2341102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 04/05/2024] [Indexed: 05/31/2024]
Abstract
INTRODUCTION Surgery and biomedical imaging encompass a big share of the medical-device market. The ever-mounting demand for precision surgery has driven the integration of these two into the field of image-guided surgery. A key-question herein is how imaging modalities can guide the surgical decision-making process. Through performance-based design, chemists, engineers, and doctors need to build a bridge between imaging technologies and surgical challenges. AREAS-COVERED This perspective article highlights the complementary nature between the technological design of an image-guidance modality and the type of procedure performed. The specific roles of the involved professionals, imaging technologies, and surgical indications are addressed. EXPERT-OPINION Molecular-image-guided surgery has the potential to advance pre-, intra- and post-operative tissue characterization. To achieve this, surgeons need the access to well-designed indication-specific chemical-agents and detection modalities. Hereby, some technologies stimulate exploration ('go'), while others stimulate caution ('stop'). However, failing to adequately address the indication-specific needs rises the risk of incorrect tool employment and sub-optimal surgical performance. Therefore, besides the availability of new technologies, market growth is highly dependent on the practical nature and impact on real-life clinical care. While urology currently takes the lead in the widespread implementation of image-guidance technologies, the topic is generic and its popularity spreads rapidly within surgical oncology.
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Affiliation(s)
- Fijs W B van Leeuwen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Tessa Buckle
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Daphne D D Rietbergen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
- Section of Nuclear Medicine, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Matthias N van Oosterom
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
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2
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Pisano G, Wendler T, Valdés Olmos RA, Garganese G, Rietbergen DDD, Giammarile F, Vidal-Sicart S, Oonk MHM, Frumovitz M, Abu-Rustum NR, Scambia G, Rufini V, Collarino A. Molecular image-guided surgery in gynaecological cancer: where do we stand? Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06604-1. [PMID: 38233609 DOI: 10.1007/s00259-024-06604-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/04/2024] [Indexed: 01/19/2024]
Abstract
PURPOSE The aim of this review is to give an overview of the current status of molecular image-guided surgery in gynaecological malignancies, from both clinical and technological points of view. METHODS A narrative approach was taken to describe the relevant literature, focusing on clinical applications of molecular image-guided surgery in gynaecology, preoperative imaging as surgical roadmap, and intraoperative devices. RESULTS The most common clinical application in gynaecology is sentinel node biopsy (SNB). Other promising approaches are receptor-target modalities and occult lesion localisation. Preoperative SPECT/CT and PET/CT permit a roadmap for adequate surgical planning. Intraoperative detection modalities span from 1D probes to 2D portable cameras and 3D freehand imaging. CONCLUSION After successful application of radio-guided SNB and SPECT, innovation is leaning towards hybrid modalities, such as hybrid tracer and fusion of imaging approaches including SPECT/CT and PET/CT. Robotic surgery, as well as augmented reality and virtual reality techniques, is leading to application of these innovative technologies to the clinical setting, guiding surgeons towards a precise, personalised, and minimally invasive approach.
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Affiliation(s)
- Giusi Pisano
- Section of Nuclear Medicine, University Department of Radiological Sciences and Haematology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Thomas Wendler
- Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Augsburg, Augsburg, Germany
- Chair for Computer-Aided Medical Procedures and Augmented Reality, Technical University of Munich, Garching, Near Munich, Germany
| | - Renato A Valdés Olmos
- Interventional Molecular Imaging Laboratory & Section Nuclear Medicine, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Giorgia Garganese
- Gynecologic Oncology Unit, Department of Women, Children and Public Health Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Section of Obstetrics and Gynecology, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Daphne D D Rietbergen
- Interventional Molecular Imaging Laboratory & Section Nuclear Medicine, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Francesco Giammarile
- Nuclear Medicine and Diagnostic Imaging Section, Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - Sergi Vidal-Sicart
- Nuclear Medicine Department, Hospital Clinic Barcelona, Universitat de Barcelona, Institut d'Investigacions Biomèdiques August Pi iSunyer (IDIBAPS), Barcelona, Spain
| | - Maaike H M Oonk
- Department of Obstetrics and Gynaecology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Michael Frumovitz
- Department of Gynecologic Oncology and Reproductive Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nadeem R Abu-Rustum
- Gynecology Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Giovanni Scambia
- Gynecologic Oncology Unit, Department of Women, Children and Public Health Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Section of Obstetrics and Gynecology, University Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Vittoria Rufini
- Section of Nuclear Medicine, University Department of Radiological Sciences and Haematology, Università Cattolica del Sacro Cuore, Rome, Italy
- Nuclear Medicine Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Angela Collarino
- Nuclear Medicine Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
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Collarino A, Feudo V, Vidal-Sicart S. Sentinel node in gynecological cancers. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00017-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Hilal L, Moukarbel R, Ollaik F, Yang P, Youssef B. Patient Selection for Surgery vs Radiotherapy for Early Stage Oropharyngeal Cancer. Cancer Control 2021; 28:10732748211050770. [PMID: 34936505 PMCID: PMC8704187 DOI: 10.1177/10732748211050770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Surgery and radiation therapy are both commonly used in the treatment of early stage (AJCC stages T1-T2 N0-M0) oropharyngeal squamous cell carcinoma (OPSCC). Transoral robotic surgery (TORS) and intensity modulated radiation therapy (IMRT) have been reported to result in similar survival and disease control outcomes. However, their side effect profiles widely differ. Nevertheless, patients who experience the worst side effects and quality of life are the ones who receive the combination of TORS and adjuvant radiation or chemoradiation therapy. Thus, appropriate patient selection for surgery to minimize the need for multimodality therapy is key. We propose, in this paper, the use of sentinel lymph node biopsy in the node negative (N0) neck as a means that is worth exploring for selecting patients to either radiation therapy or surgery. Patients with a positive sentinel lymph node (SLN) would be better directed to upfront radiation. On the contrary, patients with a negative SLN biopsy would be more confidently directed towards TORS and neck dissection alone.
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Affiliation(s)
- Lara Hilal
- Department of Radiation Oncology, 11238American University of Beirut, Beirut, Lebanon
| | - Roger Moukarbel
- Department of Head and Neck Surgery, 11238American University of Beirut, Beirut, Lebanon
| | - Farah Ollaik
- Department of Radiation Oncology, 11238American University of Beirut, Beirut, Lebanon
| | - Pei Yang
- 117924Hunan Cancer Center, Changsha, China
| | - Bassem Youssef
- Department of Radiation Oncology, 11238American University of Beirut, Beirut, Lebanon
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Sentinel lymph node in endometrial cancer, is the role of Nuclear Medicine specialist still needed? Rev Esp Med Nucl Imagen Mol 2021. [PMID: 34312107 DOI: 10.1016/j.remn.2021.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Paredes P, Díaz-Feijoo B. Management of the sentinel lymph node in endometrial cancer: Is the role of Nuclear Medicine specialists still needed? Rev Esp Med Nucl Imagen Mol 2021; 40:273-274. [PMID: 34312106 DOI: 10.1016/j.remnie.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Pilar Paredes
- Servicio de Medicina Nuclear, CDI, Hospital Clínic Barcelona, Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Facultat de Medicina - Universitat de Barcelona, Barcelona, Spain.
| | - Berta Díaz-Feijoo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Facultat de Medicina - Universitat de Barcelona, Barcelona, Spain; Unidad de Ginecología Oncológica, Institut Clínic de Ginecologia, Obstetríciai Neonatologia, Hospital Clínic Barcelona, Barcelona, Spain
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Indocyanine Green Fluorescence Imaging with Lymphoscintigraphy Improves the Accuracy of Sentinel Lymph Node Biopsy in Melanoma. Plast Reconstr Surg 2021; 148:83e-93e. [PMID: 34181617 DOI: 10.1097/prs.0000000000008096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Despite advances in melanoma management, there remains room for improvement in the accuracy of sentinel lymph node biopsy. The authors analyzed a prospective cohort of patients with primary cutaneous melanoma who underwent sentinel lymph node biopsy with lymphoscintigraphy and indocyanine green fluorescence to evaluate the quality and accuracy of this technique. METHODS Consecutive primary cutaneous melanoma patients who underwent sentinel lymph node biopsy with radioisotope lymphoscintigraphy and indocyanine green fluorescence from 2012 to 2018 were prospectively enrolled. Analysis was performed of melanoma characteristics, means of identifying sentinel lymph nodes, sentinel lymph node status, and recurrence. RESULTS Five hundred ninety-four melanomas and 1827 nodes were analyzed; 1556 nodes (85.2 percent) were identified by radioactivity/fluorescence, 255 (14 percent) by radioactivity only, and 16 (0.9 percent) with indocyanine green only. There were 163 positive sentinel nodes. One hundred forty-seven (90.2 percent) were identified by radioactivity/fluorescence, 13 (8 percent) by radioactivity only, and three (0.6 percent) with fluorescence only. Of the 128 patients with a positive biopsy, eight patients' (6.3 percent) nodes were identified by radioactivity only and four (3.4 percent) with fluorescence only. There were 128 patients with a positive biopsy, 454 with a negative biopsy, and 12 patients who had a negative biopsy with subsequent nodal recurrence. Mean follow-up was 2.8 years. CONCLUSIONS In the study of the largest cohort of patients with primary cutaneous melanoma who underwent a sentinel lymph node biopsy with radioisotope lymphoscintigraphy and indocyanine green-based technology, the quality and accuracy of this technique are demonstrated. This has important implications for melanoma patients, as the adoption of this approach with subsequent accurate staging, adjuvant workup, and treatment may improve survival outcomes. . CLINICAL QUESTION/LEVEL OF EVIDENCE Diagnostic, II.
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Nagar H, Wietek N, Goodall RJ, Hughes W, Schmidt-Hansen M, Morrison J. Sentinel node biopsy for diagnosis of lymph node involvement in endometrial cancer. Cochrane Database Syst Rev 2021; 6:CD013021. [PMID: 34106467 PMCID: PMC8189170 DOI: 10.1002/14651858.cd013021.pub2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Pelvic lymphadenectomy provides prognostic information for those diagnosed with endometrial (womb) cancer and provides information that may influence decisions regarding adjuvant treatment. However, studies have not shown a therapeutic benefit, and lymphadenectomy causes significant morbidity. The technique of sentinel lymph node biopsy (SLNB), allows the first draining node from a cancer to be identified and examined histologically for involvement with cancer cells. SLNB is commonly used in other cancers, including breast and vulval cancer. Different tracers, including colloid labelled with radioactive technetium-99, blue dyes, e.g. patent or methylene blue, and near infra-red fluorescent dyes, e.g. indocyanine green (ICG), have been used singly or in combination for detection of sentinel lymph nodes (SLN). OBJECTIVES To assess the diagnostic accuracy of sentinel lymph node biopsy (SLNB) in the identification of pelvic lymph node involvement in women with endometrial cancer, presumed to be at an early stage prior to surgery, including consideration of the detection rate. SEARCH METHODS We searched MEDLINE (1946 to July 2019), Embase (1974 to July 2019) and the relevant Cochrane trial registers. SELECTION CRITERIA We included studies that evaluated the diagnostic accuracy of tracers for SLN assessment (involving the identification of a SLN plus histological examination) against a reference standard of histological examination of removed pelvic +/- para-aortic lymph nodes following systematic pelvic +/- para-aortic lymphadenectomy (PLND/PPALND) in women with endometrial cancer, where there were sufficient data for the construction of two-by-two tables. DATA COLLECTION AND ANALYSIS Two review authors (a combination of HN, JM, NW, RG, and WH) independently screened titles and abstracts for relevance, classified studies for inclusion/exclusion and extracted data. We assessed the methodological quality of studies using the QUADAS-2 tool. We calculated the detection rate as the arithmetic mean of the total number of SLNs detected out of the total number of women included in the included studies with the woman as the unit of analysis, used univariate meta-analytical methods to estimate pooled sensitivity estimates, and summarised the results using GRADE. MAIN RESULTS The search revealed 6259 unique records after removal of duplicates. After screening 232 studies in full text, we found 73 potentially includable records (for 52 studies), although we were only able to extract 2x2 table data for 33 studies, including 2237 women (46 records) for inclusion in the review, despite writing to trial authors for additional information. We found 11 studies that analysed results for blue dye alone, four studies for technetium-99m alone, 12 studies that used a combination of blue dye and technetium-99m, nine studies that used indocyanine green (ICG) and near infra-red immunofluorescence, and one study that used a combination of ICG and technetium-99m. Overall, the methodological reporting in most of the studies was poor, which resulted in a very large proportion of 'unclear risk of bias' ratings. Overall, the mean SLN detection rate was 86.9% (95% CI 82.9% to 90.8%; 2237 women; 33 studies; moderate-certainty evidence). In studies that reported bilateral detection the mean rate was 65.4% (95% CI 57.8% to 73.0%) . When considered according to which tracer was used, the SLN detection rate ranged from 77.8% (95% CI 70.0% to 85.6%) for blue dye alone (559 women; 11 studies; low-certainty evidence) to 100% for ICG and technetium-99m (32 women; 1 study; very low-certainty evidence). The rates of positive lymph nodes ranged from 5.2% to 34.4% with a mean of 20.1% (95% CI 17.7% to 22.3%). The pooled sensitivity of SLNB was 91.8% (95% CI 86.5% to 95.1%; total 2237 women, of whom 409 had SLN involvement; moderate-certainty evidence). The sensitivity for of SLNB for the different tracers were: blue dye alone 95.2% (95% CI 77.2% to 99.2%; 559 women; 11 studies; low-certainty evidence); Technetium-99m alone 90.5% (95% CI 67.7% to 97.7%; 257 women; 4 studies; low-certainty evidence); technetium-99m and blue dye 91.9% (95% CI 74.4% to 97.8%; 548 women; 12 studies; low-certainty evidence); ICG alone 92.5% (95% CI 81.8% to 97.1%; 953 women; 9 studies; moderate-certainty evidence); ICG and blue dye 90.5% (95% CI 63.2.6% to 98.1%; 215 women; 2 studies; low-certainty evidence); and ICG and technetium-99m 100% (95% CI 63% to 100%; 32 women; 1 study; very low-certainty evidence). Meta-regression analyses found that the sensitivities did not differ between the different tracers used, between studies with a majority of women with FIGO stage 1A versus 1B or above; between studies assessing the pelvic lymph node basin alone versus the pelvic and para-aortic lymph node basin; or between studies that used subserosal alone versus subserosal and cervical injection. It should be noted that a false-positive result cannot occur, as the histological examination of the SLN is unchanged by the results from any additional nodes removed at systematic lymphadenectomy. AUTHORS' CONCLUSIONS The diagnostic test accuracy for SLNB using either ICG alone or a combination of a dye (blue or ICG) and technetium-99m is probably good, with high sensitivity, where a SLN could be detected. Detection rates with ICG or a combination of dye (ICG or blue) and technetium-99m may be higher. The value of a SLNB approach in a treatment pathway, over adjuvant treatment decisions based on uterine factors and molecular profiling, requires examination in a high-quality intervention study.
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Affiliation(s)
- Hans Nagar
- Belfast Health and Social Care Trust, Belfast City Hospital and the Royal Maternity Hospital, Belfast, UK
| | - Nina Wietek
- Nuffield Department of Women's & Reproductive Health, University of Oxford, Oxford, UK
| | - Richard J Goodall
- Department of Surgery and Cancer , Imperial College London, London, UK
| | - Will Hughes
- Department of Plastic Surgery, Addenbrookes Hospital, Cambridge, UK
| | - Mia Schmidt-Hansen
- National Guideline Alliance, Royal College of Obstetricians and Gynaecologists, London, UK
| | - Jo Morrison
- Department of Gynaecological Oncology, GRACE Centre, Musgrove Park Hospital, Taunton, UK
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Restaino S, Finelli A, Lucidi A, Ercoli A, Scambia G, Fanfani F. Step-by-step surgical procedures for a correct identification of the sentinel lymph node in endometrial cancer. Facts Views Vis Obgyn 2020; 12:309-314. [PMID: 33575680 PMCID: PMC7863689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND In patients with endometrial cancer, the common method for assessing the status of lymph nodes (LN) is lymphadenectomy. The sentinel lymph node (SLN) biopsy is a revolutionary concept and it will play an increasingly important role in surgical practice. The surgical technique of the sentinel lymph node is less destructive than lymphadenectomy, and it requires less anatomical knowledge. METHODS Step by step technique of cervical injection, the preparation of the anatomical spaces and the identification of the main structures to detect and remove the SLN safely in patients affected by endometrial cancer stage IA. RESULTS We identify the three different lymphatic pathways drainage from the uterine cervix and show how anatomical retroperitoneal knowledge is essential for the safe dissection of anatomical spaces. In literature it is reported that in about 9% of cases the SLN is located at the lumbo-aortic level, so it is clear how important it is to know the anatomy to follow the highlighted lymph pathway to identify first lymph node absorber of the drainage. CONCLUSION Anatomical knowledge and the correct preparation of the anatomical spaces make the identification of the sentinel lymph node safe and feasible.
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Affiliation(s)
- s Restaino
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per la Tutela della Salute della Donna e della Vita Nascente, L.go A. Gemelli; 00167 Roma, Italia
| | - A Finelli
- Gynecologic Oncology Department of Medicine and Aging Sciences University “G. d’Annunzio”of Chieti-Pescara, Via dei Vestini 131, 66100 Chieti (CH), Italy
| | - A Lucidi
- Gynecologic Oncology Department of Medicine and Aging Sciences University “G. d’Annunzio”of Chieti-Pescara, Via dei Vestini 131, 66100 Chieti (CH), Italy
| | - A Ercoli
- Gynecologic Oncology, Università degli Studi di Messina, Piazza Pugliatti, 1, 98122 Messina ME, Italy
| | - G Scambia
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per la Tutela della Salute della Donna e della Vita Nascente, L.go A. Gemelli; 00167 Roma, Italia,Università Cattolica del Sacro Cuore, Roma Largo A. Gemelli, 1 - 20123 Milano, Italia
| | - F Fanfani
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Ginecologia Oncologica, Dipartimento per la Tutela della Salute della Donna e della Vita Nascente, L.go A. Gemelli; 00167 Roma, Italia,Università Cattolica del Sacro Cuore, Roma Largo A. Gemelli, 1 - 20123 Milano, Italia
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Sahbai S, Fiz F, Taran F, Brucker S, Wallwiener D, Kupferschlaeger J, La Fougère C, Dittmann H. Influence of 99m-Tc-Nanocolloid Activity Concentration on Sentinel Lymph Node Detection in Endometrial Cancer: A Quantitative SPECT/CT Study. Diagnostics (Basel) 2020; 10:diagnostics10090700. [PMID: 32947918 PMCID: PMC7555748 DOI: 10.3390/diagnostics10090700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/14/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022] Open
Abstract
This study evaluates quantitative combined single photon emission tomography/computed x-ray tomography (SPECT/CT) to assess the influence of radiotracer concentration on detection of sentinel lymph nodes (SLN) in endometrial cancer (EC). Eighty EC patients underwent pericervical 99m-Tc-nanocolloid injection followed by SPECT/CT. The subgroup of patients with failed SLN detection in SPECT/CT (n = 20) was compared to match-paired patients showing at least two SLNs. Results of intraoperative gamma probe measurements and quantitative SPECT/CT were used for comparison. In patients with detection failure, the percentage of injected dose, absolute activity, and volume of the injection site were significantly lower (30 ± 24% vs. 55 ± 19%; p = 0.01, 43 ± 36 MBq vs. 73 ± 33 MBq; p = 0.04, and 183 ± 164 mL vs. 266 ± 164 mL; p = 0.03) while mean activity concentration in liver, spleen, and bone marrow was significantly higher (p = 0.02). Activity concentration (>33 KBq/mL) and absolute activity (>73 MBq) of injection areas correlated with successful intraoperative SLN detection. In a subgroup of 19 SLNs, a correlation between SPECT/CT-derived uptake and intraoperative count rate was found (R2 = 0.8; p < 0.001). SLN detection in EC patients depended on high radiotracer activity at the cervical injection site. Quantitative SPECT/CT could predict successful intraoperative SLN detection and may help to optimize injection technique.
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Affiliation(s)
- Samine Sahbai
- Department of Nuclear Medicine and Molecular Imaging, University Hospital Tuebingen, 72076 Tuebingen, Germany; (S.S.); (F.F.); (J.K.); (C.L.F.)
| | - Francesco Fiz
- Department of Nuclear Medicine and Molecular Imaging, University Hospital Tuebingen, 72076 Tuebingen, Germany; (S.S.); (F.F.); (J.K.); (C.L.F.)
| | - Florin Taran
- Gynecology and Obstetrics, University Hospital Tuebingen, 72076 Tuebingen, Germany; (F.T.); (S.B.); (D.W.)
| | - Sara Brucker
- Gynecology and Obstetrics, University Hospital Tuebingen, 72076 Tuebingen, Germany; (F.T.); (S.B.); (D.W.)
| | - Diethelm Wallwiener
- Gynecology and Obstetrics, University Hospital Tuebingen, 72076 Tuebingen, Germany; (F.T.); (S.B.); (D.W.)
| | - Juergen Kupferschlaeger
- Department of Nuclear Medicine and Molecular Imaging, University Hospital Tuebingen, 72076 Tuebingen, Germany; (S.S.); (F.F.); (J.K.); (C.L.F.)
| | - Christian La Fougère
- Department of Nuclear Medicine and Molecular Imaging, University Hospital Tuebingen, 72076 Tuebingen, Germany; (S.S.); (F.F.); (J.K.); (C.L.F.)
- Cluster of Excellence iFIT (EXC 2180) “Image Guided and Functionally Instructed Tumor Therapies”, University of Tuebingen, 72076 Tübingen, Germany
- German Cancer Consortium (DKTK), Partner Site Tuebingen, 72076 Tuebingen, Germany
| | - Helmut Dittmann
- Department of Nuclear Medicine and Molecular Imaging, University Hospital Tuebingen, 72076 Tuebingen, Germany; (S.S.); (F.F.); (J.K.); (C.L.F.)
- Correspondence: ; Tel.: +49-07071-29-86-553
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Siddique S, Chow JCL. Application of Nanomaterials in Biomedical Imaging and Cancer Therapy. NANOMATERIALS 2020; 10:nano10091700. [PMID: 32872399 PMCID: PMC7559738 DOI: 10.3390/nano10091700] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/24/2020] [Accepted: 08/27/2020] [Indexed: 12/11/2022]
Abstract
Nanomaterials, such as nanoparticles, nanorods, nanosphere, nanoshells, and nanostars, are very commonly used in biomedical imaging and cancer therapy. They make excellent drug carriers, imaging contrast agents, photothermal agents, photoacoustic agents, and radiation dose enhancers, among other applications. Recent advances in nanotechnology have led to the use of nanomaterials in many areas of functional imaging, cancer therapy, and synergistic combinational platforms. This review will systematically explore various applications of nanomaterials in biomedical imaging and cancer therapy. The medical imaging modalities include magnetic resonance imaging, computed tomography, positron emission tomography, single photon emission computerized tomography, optical imaging, ultrasound, and photoacoustic imaging. Various cancer therapeutic methods will also be included, including photothermal therapy, photodynamic therapy, chemotherapy, and immunotherapy. This review also covers theranostics, which use the same agent in diagnosis and therapy. This includes recent advances in multimodality imaging, image-guided therapy, and combination therapy. We found that the continuous advances of synthesis and design of novel nanomaterials will enhance the future development of medical imaging and cancer therapy. However, more resources should be available to examine side effects and cell toxicity when using nanomaterials in humans.
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Affiliation(s)
- Sarkar Siddique
- Department of Physics, Ryerson University, Toronto, ON M5B 2K3, Canada;
| | - James C. L. Chow
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 1X6, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON M5T 1P5, Canada
- Correspondence: ; Tel.: +1-416-946-4501
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Jerman LF, Anderson L, Markham R, Hey-Cunningham AJ. The Lymphatic System in Endometriosis: a Pilot Study of Endometrial-Like Cells and Immune Cell Populations in Lymph Nodes Associated with Deep Infiltrating Bowel Lesions. Reprod Sci 2020; 27:977-987. [PMID: 32077078 DOI: 10.1007/s43032-020-00171-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 02/04/2019] [Indexed: 10/25/2022]
Abstract
In endometriosis, the lymphatic and immune systems are implicated in disease establishment and progression. The objective of this pilot study was to examine endometrial-like, and for the first time, immune cell populations in lymph nodes associated with deep infiltrating endometriosis (DIE) bowel lesions. Premenopausal women undergoing excision of endometriosis and/or hysterectomy were included. DIE bowel lesion-associated (n = 10) and other pelvic (n = 15) lymph nodes were studied. Samples were immunohistochemically stained for endometrial-like cells (CD10), T cells (CD3, CD4, CD8, and FoxP3), dendritic cells (DC; DC-Lamp and DC-Sign), B cells (CD20, CD79 and plasma), macrophages (CD68), and natural killer cells (NK; CD57). Cell abundance (percentage positive area) and antigen expression (optical density; OD) were quantified. Endometrial-like cells and each immune cell population were present in all studied nodes. The DIE bowel lesion-associated nodes showed features of immune activation, with T cell proliferation (CD3+ area p = 0.007, CD4+ area p = 0.015 compared with other pelvic nodes); and a mixture of helper and regulatory T cells, B cells, DCs, macrophages, and plasma cells present in the paracortex. In DIE bowel lesion-associated compared with other pelvic nodes, CD10+ endometrial-like cells were reduced (percentage positive area p < 0.001, OD p = 0.004). This study provides new insight into lymphatic and immune system involvement in advanced endometriosis. In particular, we have shown evidence of immune activation in DIE lesion-associated nodes. This was despite lower endometrial-like cell numbers compared with other pelvic nodes. The observations contribute to a developing understanding of the local immune response to advanced disease.
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Affiliation(s)
- Laila F Jerman
- The University of Sydney Obstetrics, Gynaecology and Neonatology; Central Clinical School; Faculty of Medicine and Health, Medical Foundation Building K25, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Lyndal Anderson
- Department of Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Sydney, NSW, 2050, Australia.,The University of Sydney Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Robert Markham
- The University of Sydney Obstetrics, Gynaecology and Neonatology; Central Clinical School; Faculty of Medicine and Health, Medical Foundation Building K25, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Alison J Hey-Cunningham
- The University of Sydney Obstetrics, Gynaecology and Neonatology; Central Clinical School; Faculty of Medicine and Health, Medical Foundation Building K25, The University of Sydney, Sydney, NSW, 2006, Australia.
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Knackstedt R, Couto RA, Ko J, Cakmakoglu C, Wu D, Gastman B. Indocyanine Green Fluorescence Imaging with Lymphoscintigraphy for Sentinel Node Biopsy in Melanoma: Increasing the Sentinel Lymph Node-Positive Rate. Ann Surg Oncol 2019; 26:3550-3560. [PMID: 31313036 DOI: 10.1245/s10434-019-07617-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Indexed: 12/17/2023]
Abstract
INTRODUCTION The goal of this study was to analyze patients who underwent a sentinel lymph node biopsy (SLNB) in melanoma with the combination of radioisotope lymphoscintigraphy and indocyanine green (ICG) fluorescence imaging to compare our true positive (TP) rate, a means to perform immediate analysis of the SLNB, with that of the literature. METHODS Consecutive cutaneous melanoma patients who underwent SLNB with lymphoscintigraphy and ICG-based fluorescence imaging by the senior author (BG) from 2012 to 2018 were prospectively enrolled. The average expected SLN-positive rate per T stage was calculated based on three studies and compared with our SLN-positive rate. RESULTS Overall, 574 consecutive patients were analyzed. Average Breslow thickness was 1.9 mm. A total of 1754 sentinel nodes were sampled; 1497 were identified by gamma probe signaling and ICG, 241 were identified by gamma probe signaling only, and 16 were identified by ICG only. There were 123 (21.4%) patients with at least one positive SLN; 113 (91.9%) had at least one positive node identified with both gamma probe signaling and ICG, 8 (6.5%) had positive node(s) identified with gamma probe signaling only, and 2 (1.6%) had positive node(s) identified with ICG only. There was an overall 21.4% SLN-positive rate, with 8% T1, 18.5% T2, 41.1% T3, and 52.4% T4, which is higher than the predicted rates for each stage. CONCLUSIONS With the largest cohort of patients reported who underwent a melanoma SLNB with lymphoscintigraphy and ICG, we demonstrated that this technique results in higher SLN-positive rates than predicted. Patients are being followed but, given the TP data, knowledge of our results may foster the use of this modality to improve staging and treatment options.
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Affiliation(s)
- Rebecca Knackstedt
- Department of Plastic and Reconstructive Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Rafael A Couto
- Department of Plastic and Reconstructive Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Jennifer Ko
- Department of Anatomic Pathology, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Cagri Cakmakoglu
- Department of Plastic and Reconstructive Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Daisy Wu
- University of Toledo Medical School, Toledo, OH, USA
| | - Brian Gastman
- Department of Plastic and Reconstructive Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA.
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Glickman AG, Valdes S, Gil-Ibañez B, Paredes P, Cortés KS, Torné Blade AA. Present status of sentinel lymph node biopsy in cervical cancer. Rep Pract Oncol Radiother 2018; 23:495-502. [PMID: 30534012 PMCID: PMC6277279 DOI: 10.1016/j.rpor.2018.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 02/17/2018] [Accepted: 04/08/2018] [Indexed: 02/06/2023] Open
Abstract
Cervical cancer is the fourth most common cancer in women, and seventh overall. This disease represents a medical, economic and social burden. In early FIGO stage patients (IA, IB1 and IIA1), nodal involvement is the most important prognostic factor. Imaging evaluation of nodal metastasis is of limited value. In order to determine lymph node involvement, allow loco-regional control of the disease, define the need for adjuvant radiotherapy and improve survival, standard surgery for early disease is radical hysterectomy with systematic pelvic lymphadenectomy. However, this surgical treatment has risks and complications: longer operative time, larger blood loss, neurovascular or ureteral injury, lower-limb lymphedema, symptomatic lymphocysts, hydronephrosis. A method that allows to define the presence of regional metastasis with less morbidity and equal or greater precision is particularly relevant. The use of the sentinel lymph node biopsy is intended to reach that purpose. The present study reviews recent literature on the role of sentinel lymph node biopsy in cervical cancer, analyzing its indications and contraindications, injection and detection techniques, tracers used, surgical and pathological approaches and its applicability in up-to-date clinical practice.
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Affiliation(s)
- Ariel Gustavo Glickman
- Gynecological Oncology Unit, Barcelona Clinic Hospital, 170 Villaroel St, Barcelona 08036, Spain
| | - Sergio Valdes
- Gynecological Oncology Unit, Barcelona Clinic Hospital, 170 Villaroel St, Barcelona 08036, Spain
| | - Blanca Gil-Ibañez
- Gynecological Oncology Unit, Barcelona Clinic Hospital, 170 Villaroel St, Barcelona 08036, Spain
| | - Pilar Paredes
- Nuclear Medicine, Barcelona Clinic Hospital, 170 Villaroel St, Barcelona 08036, Spain
| | | | - Aureli Angel Torné Blade
- Gynecological Oncology Unit, Barcelona Clinic Hospital, 170 Villaroel St, Barcelona 08036, Spain
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15
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Indocyanine green fluorescence imaging with lymphoscintigraphy for sentinel node biopsy in head and neck melanoma. J Surg Res 2018; 228:77-83. [DOI: 10.1016/j.jss.2018.02.064] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 11/11/2017] [Accepted: 02/27/2018] [Indexed: 02/05/2023]
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Kimmig R, Buderath P, Rusch P, Mach P, Aktas B. Early ovarian cancer surgery with indocyanine-green-guided targeted compartmental lymphadenectomy (TCL, pelvic part). J Gynecol Oncol 2017; 28:e68. [PMID: 28657229 PMCID: PMC5540727 DOI: 10.3802/jgo.2017.28.e68] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/23/2017] [Accepted: 06/02/2017] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Para-aortic indocyanine-green (ICG)-guided targeted compartmental lymphadenectomy is feasible in early ovarian cancer; systematic pelvic and para-aortic lymphadenectomy could potentially be avoided if thoroughly investigated sentinel nodes could predict whether residual nodes will be involved or free of disease. In contrast to advanced ovarian cancer, where the therapeutic potential of lymphadenectomy will soon be clarified by the results of the Arbeitsgemeinschaft Gynäkologische Onkologie lymphadenectomy in ovarian neoplasms (AGO LION) trial, systematic lymphadenectomy seems to be mandatory for diagnostic and also therapeutic purposes in early ovarian cancer. Sentinel node biopsy or resection of the regional lymphatic network may reduce morbidity compared to systematic lymphadenectomy as shown already for other entities. Apart from the ovarian mesonephric pathway, a second Müllerian uterine pathway exists for lymphatic drainage of the ovary. Lymphatic valves apparently do not exist at this level of the utero-ovarian network since injection of radioactivity into the ovarian ligaments also labelled pelvic nodes. METHODS We applied ICG using 4×0.5 mL of a 1.66 mg/mL ICG solution for transcervical injection into the fundal and midcorporal myometrium at each side [10] instead of injection into the infundibulopelvic ligament, since the utero-ovarian drainage was intact. RESULTS In this case a 1.8 cm cancer of the right ovary was removed in continuity with its draining lymphatic vessels and at least the first 2 sentinel nodes in each channel "en bloc" as shown in this video for the pelvic part, consistent with the loco-regional ontogenetic approach. CONCLUSION This could potentially avoid most of systematic lymphadenectomies in early ovarian cancer.
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Affiliation(s)
- Rainer Kimmig
- Department of Gynecology and Obstetrics, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
| | - Paul Buderath
- Department of Gynecology and Obstetrics, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Peter Rusch
- Department of Gynecology and Obstetrics, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Pawel Mach
- Department of Gynecology and Obstetrics, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Bahriye Aktas
- Department of Gynecology and Obstetrics, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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Shirota C, Hinoki A, Takahashi M, Tanaka Y, Tainaka T, Sumida W, Murase N, Oshima K, Shirotsuki R, Chiba K, Morimoto Y, Uchida H. New Navigation Surgery for Resection of Lymphatic Malformations Using Indocyanine Green Fluorescence Imaging. AMERICAN JOURNAL OF CASE REPORTS 2017; 18:529-531. [PMID: 28500279 PMCID: PMC5439529 DOI: 10.12659/ajcr.903465] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Patient: Male, 15 Final Diagnosis: Lymphatic malformations Symptoms: Abdominal pain Medication: — Clinical Procedure: Navigation surgery Specialty: Surgery
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Affiliation(s)
- Chiyoe Shirota
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akinari Hinoki
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masataka Takahashi
- Department of Pediatric Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yujiro Tanaka
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahisa Tainaka
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Wataru Sumida
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naruhiko Murase
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuo Oshima
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryo Shirotsuki
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kosuke Chiba
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuji Morimoto
- Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Saitama, Japan
| | - Hiroo Uchida
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Role of ICG- 99mTc-nanocolloid for sentinel lymph node detection in cervical cancer: a pilot study. Eur J Nucl Med Mol Imaging 2017; 44:1853-1861. [PMID: 28492965 DOI: 10.1007/s00259-017-3706-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 04/11/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE Sentinel lymph node biopsy (SLNB) can be used for nodal staging in early cervical cancer. For this purpose, the tracers most commonly used are radiotracers based on technetium. For the last decade, indocyanine green (ICG) has been used as a tracer for SLNB in other malignancies with excellent results and, more recently, a combination of ICG and a radiotracer has been shown to have the advantages of both tracers. The aim of this study was to evaluate the role of ICG-99mTc-nanocolloid in SLN detection in patients with cervical cancer. METHODS This prospective study included 16 patients with cervical cancer. The hybrid tracer was injected the day (19-21 h) before surgery for planar and SPECT/CT lymphoscintigraphy. Blue dye was administered periorificially in 14 patients. SLNs were removed according to their distribution on lymphoscintigraphy and when radioactive, fluorescent and/or stained with blue dye. Nodal specimens were pathologically analysed for metastases including by immunochemistry. RESULTS Lymphoscintigraphy and SPECT/CT showed drainage in all patients. A total of 69 SLNs were removed, of which 66 were detected by their radioactivity signal and 67 by their fluorescence signal. Blue dye identified only 35 SLNs in 12 of the 14 patients (85.7%). All patients showed bilateral pelvic drainage. Micrometastases were diagnosed in two patients, and were the only lymphatic nodes involved. CONCLUSIONS SLNB with ICG-99mTc-nanocolloid is feasible and safe in patients with early cervical cancer. This hybrid tracer provided bilateral SLN detection in all patients and a higher detection rate than blue dye, so it could become an alternative to the combined technique.
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Kimmig R, Buderath P, Mach P, Rusch P, Aktas B. Surgical treatment of early ovarian cancer with compartmental resection of regional lymphatic network and indocyanine-green-guided targeted compartmental lymphadenectomy (TCL, paraaortic part). J Gynecol Oncol 2017; 28:e41. [PMID: 28382801 PMCID: PMC5391397 DOI: 10.3802/jgo.2017.28.e41] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 02/28/2017] [Accepted: 03/05/2017] [Indexed: 11/30/2022] Open
Abstract
Objective Whether pelvic and para-aortic lymphadenectomy is of therapeutic benefit in advanced ovarian cancer will remain unclear until the publication of the Arbeitsgemeinschaft Gynäkologische Onkologie lymphadenectomy in ovarian neoplasms (AGO LION) trial. In early ovarian cancer, however, lymphadenectomy seems mandatory for diagnostic and also therapeutic reasons [123]. Methods Complete systematic lymphadenectomy is accompanied by morbidity which may be reduced by sentinel node biopsy already established for several solid tumors [456]. In ovarian cancer there are 2 main pathways in lymphatic drainage: along the ovarian vessels to the para-aortic nodes and the uterine vessels to the iliac lymph compartments [7]. Following injection of radioactive dye into the ovarian ligaments this could be confirmed suggesting that there is bidirectional flow at this level of the ovarian and uterine lymphatic pathways [8]. Indocyanine-green-guided (ICG) injection to the uterine corpus seems to be equally effective in labelling the “uterine Müllerian” and the “ovarian mesonephric” lymphatic drainage of the ovary [910]. Results This technique [9] was applied and will be outlined in the video showing the procedure with respect to the para-aortic lymphatic drainage. Isolated sentinel node biopsy and tumor excision will not resect the organ compartment together with its super-ordinated draining lymphatic system at risk. Conclusion Thus, the authors suggest to remove the malignancy together with its draining lymphatic vessels and at least the first 2 sentinel nodes in each channel en bloc; we propose to analyze this procedure consistent with the ontogenetic approach [1112] with respect to diagnostic accuracy and loco-regional control. This could potentially avoid most of systematic lymphadenectomies in early ovarian cancer.
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Affiliation(s)
- Rainer Kimmig
- Department of Gynecology and Obstetrics, West-German Cancer Center, University of Duisburg-Essen, Essen, Germany.
| | - Paul Buderath
- Department of Gynecology and Obstetrics, West-German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Pawel Mach
- Department of Gynecology and Obstetrics, West-German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Peter Rusch
- Department of Gynecology and Obstetrics, West-German Cancer Center, University of Duisburg-Essen, Essen, Germany
| | - Bahriye Aktas
- Department of Gynecology and Obstetrics, West-German Cancer Center, University of Duisburg-Essen, Essen, Germany
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