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Chauvet P, Jacobs A, Jaillet L, Comptour A, Pereira B, Canis M, Bourdel N. Indocyanine green in gynecologic surgery: Where do we stand? A literature review and meta-analysis. J Gynecol Obstet Hum Reprod 2024; 53:102819. [PMID: 38950735 DOI: 10.1016/j.jogoh.2024.102819] [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: 04/30/2024] [Accepted: 06/28/2024] [Indexed: 07/03/2024]
Abstract
The main objective of this study was to review and perform a meta-analysis of current literature on the use of indocyanine green for sentinel lymph node detection in pelvic gynecologic cancer. We included all studies focusing on indications and procedures associated with the use of ICG in gynecologic surgery and available on the Medline and Pubmed database. For the meta-analysis, random effect models were used for estimation of the 95 % detection rate and 95 % confidence interval, and stratified analyses by cancer type, concentration and localization of injection were performed. A total of 147 articles were included, of which 91 were studied in a meta-analysis. Results concerning detection rate by indocyanine green injection site were found to be 95.1 % and 97.3 % respectively for intracervical injection in 2 or 4 quadrants, and 77.0 % and 94.8 % for hysteroscopic and intradermal injection respectively. Results concerning detection rate by cancer type were 95.8 %, 95.2 %, 94.7 % and 95.7 % respectively for cervical, endometrial, vulvar and endometrial/cervical cancers. Finally, the results concerning detection rate by indocyanine green concentration were 91.2 %, 95.7 %, 96.7 % and 97.7 % for concentrations of <1.25 mg/ml, 1.25 mg/ml, 2.5 mg/ml and 5 mg/ml respectively. In conclusion, indocyanine green is shown to allow highlighting of sentinel lymph nodes with good reliability with an overall indocyanine green detection rate of 95.5 %. Our literature review revealed that indocyanine green feasibility has also been demonstrated in several surgical contexts, notably for reconstructive surgery and detection of endometriosis.
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Affiliation(s)
- Pauline Chauvet
- CHU Clermont-Ferrand, Department of Gynecologic surgery, CHU Estaing, 1 Place Lucie et Raymond Aubrac, 63000 Clermont, Ferrand, France; Université Clermont Auvergne, EnCoV, Institut Pascal, UMR 6602 CNRS, SIGMA Clermont, F-63000 Clermont, Ferrand, France; INSERM, CIC 1405 CRECHE Unit, CHU Clermont-Ferrand, Department of Gynecological Surgery, 63000 Clermont, Ferrand, France.
| | - Aurélie Jacobs
- CHU Clermont-Ferrand, Department of Gynecologic surgery, CHU Estaing, 1 Place Lucie et Raymond Aubrac, 63000 Clermont, Ferrand, France; INSERM, CIC 1405 CRECHE Unit, CHU Clermont-Ferrand, Department of Gynecological Surgery, 63000 Clermont, Ferrand, France
| | - Lucie Jaillet
- CHU Clermont-Ferrand, Department of Gynecologic surgery, CHU Estaing, 1 Place Lucie et Raymond Aubrac, 63000 Clermont, Ferrand, France; Université Clermont Auvergne, EnCoV, Institut Pascal, UMR 6602 CNRS, SIGMA Clermont, F-63000 Clermont, Ferrand, France
| | - Aurélie Comptour
- CHU Clermont-Ferrand, Department of Gynecologic surgery, CHU Estaing, 1 Place Lucie et Raymond Aubrac, 63000 Clermont, Ferrand, France; INSERM, CIC 1405 CRECHE Unit, CHU Clermont-Ferrand, Department of Gynecological Surgery, 63000 Clermont, Ferrand, France
| | - Bruno Pereira
- CHU Clermont-Ferrand, Biostatistics Unit, 7 Place Henri Dunant, 63000 Clermont, Ferrand, France
| | - Michel Canis
- CHU Clermont-Ferrand, Department of Gynecologic surgery, CHU Estaing, 1 Place Lucie et Raymond Aubrac, 63000 Clermont, Ferrand, France; Université Clermont Auvergne, EnCoV, Institut Pascal, UMR 6602 CNRS, SIGMA Clermont, F-63000 Clermont, Ferrand, France; INSERM, CIC 1405 CRECHE Unit, CHU Clermont-Ferrand, Department of Gynecological Surgery, 63000 Clermont, Ferrand, France
| | - Nicolas Bourdel
- CHU Clermont-Ferrand, Department of Gynecologic surgery, CHU Estaing, 1 Place Lucie et Raymond Aubrac, 63000 Clermont, Ferrand, France; Université Clermont Auvergne, EnCoV, Institut Pascal, UMR 6602 CNRS, SIGMA Clermont, F-63000 Clermont, Ferrand, France; INSERM, CIC 1405 CRECHE Unit, CHU Clermont-Ferrand, Department of Gynecological Surgery, 63000 Clermont, Ferrand, France
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Restaino S, Bizzarri N, Tarantino V, Pelligra S, Moroni R, Palmieri E, Monterossi G, Costantini B, Scambia G, Fanfani F. Comparison of Different Near-Infrared Technologies to Detect Sentinel Lymph Node in Uterine Cancer: A Prospective Comparative Cohort Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19127377. [PMID: 35742629 PMCID: PMC9224254 DOI: 10.3390/ijerph19127377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/14/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVES Sentinel lymph node biopsy is considered a crucial step in endometrial cancer staging. Cervical injection has become the most favored technique and indocyanine green has been demonstrated to be more accurate than other tracers. Different near-infrared camera systems are currently being used to detect indocyanine green in sentinel lymph nodes and have been compared in different patients. The present study aimed to determine the number and site of sentinel lymph nodes detected in the same patients with two different near-infrared technologies. METHODS This is a prospective, single-center, observational, non-sponsored study. Patients with presumed uterine-confined endometrial cancer were prospectively enrolled. After cervical injection, two different near-infrared cameras were used to detect sentinel lymph nodes at the same time: Olympus, Tokyo, Japan-considered the standard (SNIR); and Medtronic, Minneapolis, MN, USA with VISION SENSE® which is a new laser near-infrared (LNIR) fluorescence laparoscope. The two cameras were alternatively switched on to detect sentinel lymph nodes in the same patients. RESULTS Seventy-four consecutive patients were included in the study. Most of the patients were diagnosed with endometrioid histology (62, 83.8%), FIGO stage IA (48, 64.9%), grade 2 (43, 58.1%), and underwent surgery with laparoscopic approach (70, 94.0%). The bilateral detection rate was 56/74 (75.7%) with SNIR and 63/74 (85.1%) with LNIR (p = 0.214). The total number of sentinel lymph nodes identified in the left hemipelvis was 65 and 70 with SNIR and LNIR, respectively; while in the right hemipelvis, there were 74 and 76, respectively. The median number of sentinel lymph nodes identified with SNIR and LNIR was 2 (range, 0-4) and 2 (range, 0-4), respectively (p = 0.370). No difference in site of sentinel lymph node detection was evident between the two technologies (p = 0.994). Twelve patients (16.2%) had sentinel lymph node metastasis: in all cases metastatic sentinel lymph nodes were detected both with Olympus and LNIR. CONCLUSIONS No difference in bilateral detection rate and number or site of sentinel lymph node detection was evident comparing two different technologies of near-infrared camera for ICG detection in endometrial cancer patients. No difference in sentinel lymph node metastases identification was detected between the two technologies.
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Affiliation(s)
- Stefano Restaino
- Department of Obstetrics, Gynecology, and Pediatrics, Obstetrics and Gynecology Unit, Udine University Hospital, DAME, 33100 Udine, Italy;
| | - Nicolò Bizzarri
- UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (N.B.); (S.P.); (G.M.); (B.C.); (G.S.)
| | | | - Silvia Pelligra
- UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (N.B.); (S.P.); (G.M.); (B.C.); (G.S.)
| | - Rossana Moroni
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Direzione Scientifica IRCCS, L.go Agostino Gemelli 8, 00168 Rome, Italy;
| | - Emilia Palmieri
- Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (V.T.); (E.P.)
| | - Giorgia Monterossi
- UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (N.B.); (S.P.); (G.M.); (B.C.); (G.S.)
| | - Barbara Costantini
- UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (N.B.); (S.P.); (G.M.); (B.C.); (G.S.)
| | - Giovanni Scambia
- UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (N.B.); (S.P.); (G.M.); (B.C.); (G.S.)
- Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (V.T.); (E.P.)
| | - Francesco Fanfani
- UOC Ginecologia Oncologica, Dipartimento per la Salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (N.B.); (S.P.); (G.M.); (B.C.); (G.S.)
- Università Cattolica del Sacro Cuore, 00168 Rome, Italy; (V.T.); (E.P.)
- Correspondence: ; Tel.: +39-06-30154979
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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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Harold JA, Uyar D, Rader JS, Bishop E, Nugent M, Simpson P, Bradley WH. Adipose-only sentinel lymph nodes: a finding during the adaptation of a sentinel lymph node mapping algorithm with indocyanine green in women with endometrial cancer. Int J Gynecol Cancer 2019; 29:53-59. [DOI: 10.1136/ijgc-2018-000008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/28/2018] [Accepted: 10/01/2018] [Indexed: 11/03/2022] Open
Abstract
ObjectiveTo identify factors that affect successful adaptation of sentinel lymph node mapping and those that lead to unintended adipose-only sentinel lymph node identification.MethodsSurgical and pathological data were prospectively collected on patients with endometrial cancer who underwent sentinel lymph node mapping with indocyanine green with or without pelvic and/or para-aortic lymph node dissection between November 2013 and April 2017. All mapping cases were performed with the robotic system. Adipose-only specimens were defined as a sentinel lymph node without a pathologically identified lymph node after ultrastaging.ResultsA total of 202 patients were included: 83% had endometrioid pathology, 12% serous, 3% carcinosarcoma, and 2% clear cell, with mixed pathology noted in 2%. The bilateral sentinel lymph node detection rate was 66%, and the rate of mapping at least a unilateral sentinel lymph node was 86%. Neither the bilateral nor the unilateral sentinel lymph node mapping rate changed with increased surgeon experience. The rate of adipose-only sentinel lymph node identification was more frequent when comparing the first 10 cases (37%), cases 11 – 30 (28%), and > 30 cases (9%) (P = 0.006). Body mass index > 30 kg/m2, uterine fibroids, The International Federation of Gynecology and Obstetrics (FIGO) grade, and histology were not found to have a statistically significant impact on either sentinel lymph node identification or adipose-only sentinel lymph node identification. Adipose-only sentinel lymph nodes were more likely with increased time from cervical injection to identification of the sentinel lymph node in the right hemipelvis. The median range was 28 min (14–73) for true sentinel lymph node identification vs 33 min (23–74) for adipose-only sentinel lymph node identification (P = 0.02).ConclusionPatient and surgeon factors did not impact the identification of sentinel lymph nodes over time. Adipose-only sentinel lymph nodes were more frequently identified in the initial cases and represent a potential complication to adapting sentinel lymph node biopsy without lymphadenectomy. The increase in adipose-only sentinel lymph node identification that was associated with time from cervical injection may represent delayed or disrupted uptake of indocyanine green.
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Buda A, Restaino S, Di Martino G, De Ponti E, Monterossi G, Dinoi G, Magni S, Quagliozzi L, Dell’Orto F, Ciccarone F, Lamanna M, Scambia G, Landoni F, Fanfani F. The impact of the type of nodal assessment on prognosis in patients with high-intermediate and high-risk ESMO/ESGO/ESTRO group endometrial cancer. A multicenter Italian study. Eur J Surg Oncol 2018; 44:1562-1567. [DOI: 10.1016/j.ejso.2018.06.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 06/07/2018] [Accepted: 06/27/2018] [Indexed: 12/20/2022] Open
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van Manen L, Handgraaf HJM, Diana M, Dijkstra J, Ishizawa T, Vahrmeijer AL, Mieog JSD. A practical guide for the use of indocyanine green and methylene blue in fluorescence-guided abdominal surgery. J Surg Oncol 2018; 118:283-300. [PMID: 29938401 PMCID: PMC6175214 DOI: 10.1002/jso.25105] [Citation(s) in RCA: 184] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/21/2018] [Indexed: 12/14/2022]
Abstract
Near-infrared (NIR) fluorescence imaging is gaining clinical acceptance over the last years and has been used for detection of lymph nodes, several tumor types, vital structures and tissue perfusion. This review focuses on NIR fluorescence imaging with indocyanine green and methylene blue for different clinical applications in abdominal surgery with an emphasis on oncology, based on a systematic literature search. Furthermore, practical information on doses, injection times, and intraoperative use are provided.
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Affiliation(s)
- Labrinus van Manen
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Michele Diana
- IHU-Strasbourg, Institute of Image-Guided Surgery, Strasbourg, France.,IRCAD, Research Institute against Cancer of the Digestive System, Strasbourg, France.,Department of General, Digestive and Endocrine Surgery, University Hospital of Strasbourg, Strasbourg, France
| | - Jouke Dijkstra
- Division of Image Processing, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Takeaki Ishizawa
- Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | | | - Jan Sven David Mieog
- Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands
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Real-Time Fluorescent Sentinel Lymph Node Mapping with Indocyanine Green in Women with Previous Conization Undergoing Laparoscopic Surgery for Early Invasive Cervical Cancer: Comparison with Radiotracer ± Blue Dye. J Minim Invasive Gynecol 2018; 25:455-460. [DOI: 10.1016/j.jmig.2017.10.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/01/2017] [Accepted: 10/03/2017] [Indexed: 12/12/2022]
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Di Martino G, Reato C, Verri D, Dell'Orto F, Buda A. Laparoscopic Typical and Atypical Locations of Sentinel Node Mapping with Indocyanine Green: Comparison of 2 Near-Infrared Fluorescence Systems. J Minim Invasive Gynecol 2017; 25:384-385. [PMID: 28939481 DOI: 10.1016/j.jmig.2017.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 09/02/2017] [Accepted: 09/12/2017] [Indexed: 11/18/2022]
Abstract
STUDY OBJECTIVE To present our minimally invasive laparoscopic approach for sentinel lymph node (SLN) mapping with indocyanine green (ICG) using 2 fluorescence systems. DESIGN A step-by-step video description of the technique showing the most frequent typical and atypical location of SLNs (educational video). SETTING Lymph node staging in apparent confined endometrial cancer. PATIENTS Women underwent SLN mapping in a minimally invasive setting. INTERVENTIONS Laparoscopic SLN mapping before comprehensive staging including simple hysterectomy, bilateral salpingo-oophorectomy, and pelvic and aortic bilateral lymphadenectomy in case of unilateral or no identification of SLNs. The PINPOINT 0 degree HD S1 SPY camera (PINPOINT Endoscopic Fluorescence Imaging System; NOVADAQ, Mississauga, ON, Canada) or the Full HD Image 1S with ICG camera (Karl Storz Endoscopy, Tuttlingen, Germany) were used for SLN detection [1,2]. The ICG powder was diluted to a final solution of 1.25 mg/mL of fluorescent dye. After the induction of general anesthesia, a total of 4 mL of the ICG solution was injected into the cervix at the 3 and 9 o'clock positions. Attention to the technical details is crucial to correctly identify SLNs that sometimes are located in atypical locations [3]. CONCLUSION Both fluorescence systems are valid and applicable for SLN mapping in the case of apparent confined endometrial cancer. In our experience, the PINPOINT system seems to allow surgeons easier and faster nodal staging of the SLNs, particularly with the color-segmented fluorescence function activated, which can better discriminate between the lymphatic channels and the real SLNs [4,5].
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Affiliation(s)
- Giampaolo Di Martino
- Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Claudio Reato
- Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Debora Verri
- Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Federica Dell'Orto
- Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Alessandro Buda
- Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy.
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