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Sánchez-Izquierdo N, Vidal-Sicart S, Campos F, Torné A, Angeles MA, Migliorelli F, Munmany M, Saco A, Diaz-Feijoo B, Glickman A, Ordi J, Perissinotti A, del Pino M, Paredes P. Detection of the sentinel lymph node with hybrid tracer (ICG-[ 99mTc]Tc-albumin nanocolloid) in intermediate- and high-risk endometrial cancer: a feasibility study. EJNMMI Res 2021; 11:123. [PMID: 34905122 PMCID: PMC8671586 DOI: 10.1186/s13550-021-00863-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/17/2021] [Indexed: 11/10/2022] Open
Abstract
PURPOSE Indocyanine green (ICG) is frequently used for the detection of the sentinel lymph node (SLN) in gynecology, but it carries the loss of the presurgical SLN mapping provided by [99mTc]-based colloids. Hybrid tracers such as ICG-[99mTc]Tc-albumin nanocolloid combine the benefits of both components. The aim of this study was to evaluate the feasibility and applicability of this hybrid tracer injected by transvaginal ultrasound-guided myometrial injection of radiotracer (TUMIR) approach in the detection of SLNs in patients with intermediate- and high-risk EC. METHODS Fifty-two patients with intermediate- and high-risk EC underwent SLN biopsy after injection of a hybrid tracer using the TUMIR approach, followed by pelvic and paraaortic lymphadenectomy. SLNs were detected preoperatively by lymphoscintigraphic study and intraoperatively by gamma probe and near-infrared (NIR) optical laparoscopic camera. RESULTS Preoperative lymphatic drainage was obtained in 69% and intraoperative detection in 71.4% of patients. A total of 146 SLNs (4.17 SLNs/patient) were biopsied. Pelvic bilateral detection was observed in 57% of the women and paraaortic drainage in 34% of the patients. The radioactive component allowed the detection of SLN in 97.1% of the patients, while the fluorescent component detected 80%. In more than 17% of the patients with intraoperative detection, SLNs were detected only by the radioactive signal. Lymph node metastasis was identified in 14.3% of patients submitted to SLNB. The sensitivity and negative predictive value for metastatic involvement were 100%. CONCLUSION TUMIR injection of a hybrid tracer in patients with intermediate- and high-risk EC combines the benefits of the radiotracer and the fluorescence methods with a single tracer. The method increases the paraaortic detection rate and allows a potential increase in SLN detection. Notwithstanding, based on our findings, the radioactive component of the hybrid tracer cannot be obviated.
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Affiliation(s)
- Nuria Sánchez-Izquierdo
- Department of Nuclear Medicine, Hospital Clínic of Barcelona, Villarroel 170, 08036 Barcelona, Spain
| | - Sergi Vidal-Sicart
- Department of Nuclear Medicine, Hospital Clínic of Barcelona, Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
| | - Francisco Campos
- Department of Nuclear Medicine, Hospital Clínic of Barcelona, Villarroel 170, 08036 Barcelona, Spain
| | - Aureli Torné
- Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Martina Aida Angeles
- Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic of Barcelona, Barcelona, Spain
- Department of Surgical Oncology, Institut Claudius Regaud, Institut Universitaire du Cancer de Toulouse - Oncopole, Toulouse, France
| | - Federico Migliorelli
- Department of Gynecology and Obstetrics, Centre Hospitalier Intercommunal des Vallées de l’Ariège, Saint-Jean-de-Verges, France
| | - Meritxell Munmany
- Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic of Barcelona, Barcelona, Spain
| | - Adela Saco
- Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Berta Diaz-Feijoo
- Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Ariel Glickman
- Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic of Barcelona, Barcelona, Spain
| | - Jaume Ordi
- Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain
- Faculty of Medicine, University of Barcelona, Barcelona, Spain
- ISGlobal, Barcelona Institute for Global Health, Hospital Clínic-Universitat de Barcelona, 08036 Barcelona, Spain
| | - Andrés Perissinotti
- Department of Nuclear Medicine, Hospital Clínic of Barcelona, Villarroel 170, 08036 Barcelona, Spain
| | - Marta del Pino
- Institute Clinic of Gynecology, Obstetrics, and Neonatology, Hospital Clínic of Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Pilar Paredes
- Department of Nuclear Medicine, Hospital Clínic of Barcelona, Villarroel 170, 08036 Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
- Faculty of Medicine, University of Barcelona, Barcelona, Spain
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