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Alonso-Espías M, Gracia M, Zapardiel I. Benefits of sentinel node detection in cervical cancer. Curr Opin Oncol 2024; 36:397-405. [PMID: 39007197 DOI: 10.1097/cco.0000000000001063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
PURPOSE OF REVIEW Sentinel lymph node biopsy (SLNB) is a widely used technique in other gynaecological tumours but has not yet been implemented as the gold standard technique for nodal staging in cervical cancer. Since the majority of evidence is derived from retrospective studies, this review aims to summarize the most recent evidence on this relevant topic. RECENT FINDINGS SLNB has demonstrated to be a well tolerated technique for lymph node staging in early-stage cervical cancer patients with promising future as exclusive lymph node assessment method avoiding full lymphadenectomy. Moreover, it allows ultrastaging and unfrequent drainage identification, which enables the detection of patients at a high risk of recurrence who would otherwise remain unnoticed. When compared with pelvic lymphadenectomy, SLNB is also associated with less intraoperative and postoperative complications, especially in terms of lymphedema formation. SUMMARY The available evidence suggests that SLNB offers numerous advantages over the standard pelvic lymphadenectomy reducing morbidity rates and increasing diagnostic accuracy. Three ongoing prospective trials will likely answer the controversies over these questions.
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Persson J, Lührs O, Geppert B, Ekdahl L, Lönnerfors C. A prospective study evaluating an optimized sentinel node algorithm in early stage cervical cancer: The PROSACC-study. Gynecol Oncol 2024; 187:178-183. [PMID: 38788515 DOI: 10.1016/j.ygyno.2024.05.019] [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: 03/16/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
OBJECTIVE A single center prospective non-randomized study to assess a systematically developed anatomically-based sentinel lymph node (SLN) algorithm in cervical cancer. METHODS Consecutive women with FIGO 2009 stage 1A2-2A1 cervical cancer undergoing robotic radical hysterectomy/trachelectomy between September 2014 and January 2023 had cervically injected Indocyanine Green (ICG) as a tracer for detection of pelvic SLN. An anatomically based surgical algorithm was adhered to; defining SLNs as the juxtauterine mapped nodes within the upper and lower paracervical lymphatic pathways including separate removal of the parauterine lymphovascular tissue (PULT). A completion pelvic lymphadenectomy was performed. Ultrastaging and immunohistochemistry was performed on SLNs, including the PULT. RESULTS 181 women were included for analysis. Median histologic tumor size was 14.0 mm (range 2-80 mm). The bilateral mapping rate was 98.3%. As per protocol an interim analysis rejected H0 and inclusion stopped at 29 node positive women, all identified by at least one metastatic ICG-defined SLN. One woman awaiting histology at study-closure was node positive and included in the analysis. Sensitivity was 100% (95% CI, 88.4%-100%) and NPV 100% (95% CI, 97.6%-100%). In node positive women, the proximal obturator position harbored 46.1% of all SLN metastases representing the only position in 40% and 10% had isolated metastases in the PULT. CONCLUSIONS Strictly adhering to an anatomically based SLN-algorithm including identification of parallell lymphatics within major pathways, partilularly the obturator compartment, assessment of the PULT, restricting nodal dissection to the removal of SLNs accurately identifies pelvic nodal metastatic disease in early-stage cervical cancer.
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Affiliation(s)
- Jan Persson
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Skåne University Hospital, Lund University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynecology, 22185 Lund, Sweden.
| | - Oscar Lührs
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Skåne University Hospital, Lund University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynecology, 22185 Lund, Sweden
| | - Barbara Geppert
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Skåne University Hospital, Lund University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynecology, 22185 Lund, Sweden
| | - Linnea Ekdahl
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Skåne University Hospital, Lund University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynecology, 22185 Lund, Sweden
| | - Celine Lönnerfors
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Skåne University Hospital, Lund University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynecology, 22185 Lund, Sweden
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Kocian R, Kohler C, Bajsova S, Jarkovsky J, Zapardiel I, Di Martino G, van Lonkhuijzen L, Sehnal B, Sanchez OA, Gil-Ibanez B, Martinelli F, Presl J, Minar L, Pilka R, Kascak P, Havelka P, Michal M, van Gorp T, Nemejcova K, Dundr P, Cibula D. Sentinel lymph node pathological ultrastaging: Final outcome of the Sentix prospective international study in patients with early-stage cervical cancer. Gynecol Oncol 2024; 188:83-89. [PMID: 38941963 DOI: 10.1016/j.ygyno.2024.06.015] [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: 02/22/2024] [Revised: 06/15/2024] [Accepted: 06/23/2024] [Indexed: 06/30/2024]
Abstract
OBJECTIVE To report the outcome of SLN staging in the SENTIX international prospective trial of SLN biopsy in patients with cervical cancer with an intensive ultrastaging protocol and central quality control and to evaluate how the intensity of pathological assessment correlates with metastatic detection rate in SLNs. METHODS Eligible were patients with stages T1a1/LVSI+ to T1b2 (<4 cm, ≤2 cm for fertility sparing), common tumor types, no suspicious lymph nodes on imaging, and bilateral SLN detection. SLNs were examined intraoperatively and processed by an intensive protocol for ultrastaging (paraffin blocks sectioned completely in 150-μm intervals/levels). SLNs from each site were submitted for central quality control. RESULTS In the SENTIX SLN study, 647 out of 733 enrolled patients underwent SLN ultrastaging, identifying 12.5% (81/647) with node positive, N1 cases. Intraoperative detection revealed metastases in 56.8% (46/81) of these cases, categorized into macrometastases (83.7%), micrometastases (26.3%), and isolated tumor cells (9.1%). Ultrastaging identified additional metastatic involvement in 43.2% (35/81) of patients, with detailed sectioning revealing metastases (MAC/MIC) at first level in 20 cases (24.7%), at levels 2-4 in 9 cases (11.1%), and at level ≥5 in 6 cases (7.4%). CONCLUSION SLN ultrastaging detects additional 43% of N1 (MAC/MIC) in patients with negative LNs by imaging and intraoperative pathological assessment. The detection rate of positive SLN correlates with the intensity (number of levels) of ultrastaging. Examination of four levels from paraffin blocks, which detects >90% of patients with N1, is a reasonable compromise for an international standard for ultrastaging. STUDY REGISTRATION NCT02494063 (ClinicalTrials.gov).
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Affiliation(s)
- Roman Kocian
- Gynecologic Oncology Center, Department of Gynecology, Obstetrics and Neonatology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
| | - Christhardt Kohler
- Department of Special Operative and Oncologic Gynaecology, Asklepios-Clinic Hamburg, Hamburg, Germany
| | - Sylva Bajsova
- Department of Obstetrics and Gynecology, University Hospital Ostrava, Ostrava, Poruba, Czech Republic
| | - Jiri Jarkovsky
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ignacio Zapardiel
- Department of Obstetrics and Gynecology, La Paz University Hospital, Madrid, Spain
| | - Giampaolo Di Martino
- Gynecologic Oncology Surgical Division, Humanitas San Pio X, Milan, 20159, Italy; Gynecology Unit, IRCCS Fondazione San Gerardo dei Tintori, 20900, Monza, Italy
| | - Luc van Lonkhuijzen
- Center for Gynecologic Oncology, Academic Medical Centre, Amsterdam, Netherlands
| | - Borek Sehnal
- Department of Obstetrics and Gynecology, University Hospital Bulovka, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Octavio Arencibia Sanchez
- Department of Gynecologic Oncology, University Hospital of the Canary Islands, Las Palmas de Gran Canaria, Spain
| | - Blanca Gil-Ibanez
- Unit of Gynecological Oncology, Institute Clinic of Gynecology, Obstetrics and Neonatology (ICGON), Hospital Clinic of Barcelona, Barcelona, Spain
| | - Fabio Martinelli
- Department of Gynecological Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Italy; Gynecologic Oncology Surgical Division, Humanitas San Pio X, Milan, 20159, Italy
| | - Jiri Presl
- Department of Gynaecology and Obstetrics, University Hospital Pilsen, Charles University, Prague, Czech Republic
| | - Lubos Minar
- Department of Gynecology and Obstetrics, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Radovan Pilka
- Department of Obstetrics and Gynecology, Faculty of Medicine and Dentistry, Palacky University, University Hospital Olomouc, Olomouc, Czech Republic
| | - Peter Kascak
- Department of Obstetrics and Gynecology, Faculty Hospital Trencin, Trencin, Slovakia
| | - Pavel Havelka
- Department of Obstetrics and Gynecology, KNTB a.s, Zlin, Czech Republic
| | - Martin Michal
- Department of Obstetrics and Gynaecology, Hospital Ceske Budejovice, JSC, Ceske Budejovice, Czech Republic
| | - Toon van Gorp
- Department of Gynecology and Obstetrics, University Hospital Leuven, Leuven Cancer Institute, Leuven, Belgium
| | - Kristyna Nemejcova
- Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Pavel Dundr
- Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - David Cibula
- Gynecologic Oncology Center, Department of Gynecology, Obstetrics and Neonatology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Fan MS, Qiu KX, Wang DY, Wang H, Zhang WW, Yan L. Risk factors associated with false negative rate of sentinel lymph node biopsy in endometrial cancer: a systematic review and meta-analysis. Front Oncol 2024; 14:1391267. [PMID: 38634055 PMCID: PMC11021692 DOI: 10.3389/fonc.2024.1391267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
Objective Currently, sentinel lymph node biopsy (SLNB) is increasingly used in endometrial cancer, but the rate of missed metastatic lymph nodes compared to systemic lymph node dissection has been a concern. We conducted a systematic review and meta-analysis to evaluate the false negative rate (FNR) of SLNB in patients with endometrial cancer and to explore the risk factors associated with this FNR. Data sources Three databases (PubMed, Embase, Web of Science) were searched from initial database build to January 2023 by two independent reviewers. Research eligibility criteria Studies were included if they included 10 or more women diagnosed with International Federation of Gynecology and Obstetrics (FIGO) stage I or higher endometrial cancer, the study technique used sentinel lymph node localization biopsy, and the reported outcome metrics included false negative and/or FNR. Study appraisal and synthesis methods Two authors independently reviewed the abstracts and full articles. The FNR and factors associated with FNR were synthesized through random-effects meta-analyses and meta-regression. The results We identified 62 eligible studies. The overall FNR for the 62 articles was 4% (95% CL 3-5).There was no significant difference in the FNR in patients with high-risk endometrial cancer compared to patients with low-risk endometrial cancer. There was no difference in the FNR for whether frozen sections were used intraoperatively. The type of dye used intraoperatively (indocyanine green/blue dye) were not significantly associated with the false negative rate. Cervical injection reduced the FNR compared with alternative injection techniques. Indocyanine green reduced the FNR compared with alternative Tc-99m. Postoperative pathologic ultrastaging reduced the FNR. Conclusions Alternative injection techniques (other than the cervix), Tc-99m dye tracer, and the absence of postoperative pathologic ultrastaging are risk factors for a high FNR in endometrial cancer patients who undergo SLNB; therefore, we should be vigilant for missed diagnosis of metastatic lymph nodes after SLNB in such populations. Systematic review registration http://www.crd.york.ac.uk/PROSPERO/, identifier CRD42023433637.
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Affiliation(s)
- Meng-si Fan
- Department of Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong Second Medical University, Key Laboratory of Laparoscopic Technology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Ke-xin Qiu
- Department of Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong Second Medical University, Key Laboratory of Laparoscopic Technology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Dong-yue Wang
- School of Clinical Medicine, Shandong First Medical University, Jinan, China
| | - Hao Wang
- School of Clinical Medicine, Shandong First Medical University, Jinan, China
| | - Wei-wei Zhang
- Department of Gynecology, Tengzhou Maternal and Child Health Hospital, Tengzhou, Shandong, China
| | - Li Yan
- Department of Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong Second Medical University, Key Laboratory of Laparoscopic Technology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
- Department of Gynecology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
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Fumagalli D, De Vitis LA, Caruso G, Occhiali T, Palmieri E, Guillot BE, Pappalettera G, Langstraat CL, Glaser GE, Reynolds EA, Fruscio R, Landoni F, Mariani A, Grassi T. Low-Volume Metastases in Apparent Early-Stage Endometrial Cancer: Prevalence, Clinical Significance, and Future Perspectives. Cancers (Basel) 2024; 16:1338. [PMID: 38611016 PMCID: PMC11011093 DOI: 10.3390/cancers16071338] [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: 02/27/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Endometrial cancer (EC) is the most diagnosed gynecologic malignancy, and its incidence and mortality are increasing. The prognosis is highly dependent on the disease spread. Surgical staging includes retroperitoneal evaluation to detect potential lymph node metastases. In recent years, systematic lymphadenectomy has been replaced by sentinel lymph node (SLN) biopsy and ultrastaging, allowing for the detection of macrometastases, micrometastases, and isolated tumor cells (ITCs). Micrometastases and ITCs have been grouped as low-volume metastases (LVM). The reported prevalence of LVM in studies enrolling more than one thousand patients with apparent early-stage EC ranges from 1.9% to 10.2%. Different rates of LVM are observed when patients are stratified according to disease characteristics and their risk of recurrence. Patients with EC at low risk for recurrence have low rates of LVM, while intermediate- and high-risk patients have a higher likelihood of being diagnosed with nodal metastases, including LVM. Macro- and micrometastases increase the risk of recurrence and cause upstaging, while the clinical significance of ITCs is still uncertain. A recent meta-analysis found that patients with LVM have a higher relative risk of recurrence [1.34 (95% CI: 1.07-1.67)], regardless of adjuvant treatment. In a retrospective study on patients with low-risk EC and no adjuvant treatment, those with ITCs had worse recurrence-free survival compared to node-negative patients (85.1%; CI 95% 73.8-98.2 versus 90.2%; CI 95% 84.9-95.8). However, a difference was no longer observed after the exclusion of cases with lymphovascular space invasion. There is no consensus on adjuvant treatment in ITC patients at otherwise low risk, and their recurrence rate is low. Multi-institutional, prospective studies are warranted to evaluate the clinical significance of ITCs in low-risk patients. Further stratification of patients, considering histopathological and molecular features of the disease, may clarify the role of LVM and especially ITCs in specific contexts.
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Affiliation(s)
- Diletta Fumagalli
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Department of Medicine and Surgery, University of Milan-Bicocca, 20126 Milan, Italy; (R.F.); (F.L.)
| | - Luigi A. De Vitis
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Department of Gynecology, European Institute of Oncology (IEO) IRCCS, 20141 Milan, Italy
| | - Giuseppe Caruso
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Department of Gynecology, European Institute of Oncology (IEO) IRCCS, 20141 Milan, Italy
| | - Tommaso Occhiali
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Clinic of Obstetrics and Gynecology, Santa Maria della Misericordia University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Emilia Palmieri
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Gynecologic Oncology Unit, Department of Women, Children and Public Health Sciences, , Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00136 Roma, Italy
| | - Benedetto E. Guillot
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Department of Gynecology, European Institute of Oncology (IEO) IRCCS, 20141 Milan, Italy
| | - Giulia Pappalettera
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
- Department of Gynecology, European Institute of Oncology (IEO) IRCCS, 20141 Milan, Italy
| | - Carrie L. Langstraat
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
| | - Gretchen E. Glaser
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
| | - Evelyn A. Reynolds
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
| | - Robert Fruscio
- Department of Medicine and Surgery, University of Milan-Bicocca, 20126 Milan, Italy; (R.F.); (F.L.)
- Division of Gynecologic Surgery, IRCCS Fondazione San Gerardo dei Tintori, 20900 Monza, Italy
| | - Fabio Landoni
- Department of Medicine and Surgery, University of Milan-Bicocca, 20126 Milan, Italy; (R.F.); (F.L.)
- Division of Gynecologic Surgery, IRCCS Fondazione San Gerardo dei Tintori, 20900 Monza, Italy
| | - Andrea Mariani
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Mayo Clinic, Rochester, MN 55905, USA; (D.F.); (L.A.D.V.); (G.C.); (T.O.); (E.P.); (B.E.G.); (G.P.); (C.L.L.); (G.E.G.); (E.A.R.); (A.M.)
| | - Tommaso Grassi
- Department of Medicine and Surgery, University of Milan-Bicocca, 20126 Milan, Italy; (R.F.); (F.L.)
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Andreika L, Vankevičienė K, Ramašauskaitė D, Rudaitis V. Visualization Methods for Uterine Sentinel Lymph Nodes in Early-Stage Endometrial Carcinoma: A Comparative Analysis. Diagnostics (Basel) 2024; 14:552. [PMID: 38473023 DOI: 10.3390/diagnostics14050552] [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: 02/16/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Sentinel lymph node (SLN) biopsy in early-stage endometrial cancer is recommended over systematic lymphadenectomy due to reduced morbidity and comparable detection rates. The main objective of this study was to compare the overall and bilateral detection rates of SLN in early-stage endometrial cancer using three techniques. METHODS a prospective cohort study was designed to detect the difference in SLN detection rate in three cohorts: Indocyanine green (ICG), methylene blue (MB), and tracer combination (ICG + MB). Mapping characteristics, detection rate, number of SLNs, and positive SLNs of the three cohorts were compared. RESULTS A total of 99 patients were enrolled. A total of 109 SLN sites with 164 lymph nodes were detected. No differences were found between the three cohorts in terms of age, BMI, tumor diameter, or other histologic characteristics. The overall SLN detection rate (DR) was 54.3% in the MB group, 72.7% in ICG, and 80.6% in the ICG-MB group. Bilateral DR was 22.9%, 39.4%, and 54.8% in groups, respectively, with the MB method yielding significantly inferior results. CONCLUSIONS The ICG-MB group demonstrated superior overall and bilateral detection rates, but a significant difference was found only in the MB cohort. Combining tracer agents can enhance the accuracy of SLN identification in initial-stage endometrial cancer without additional risk to the patient.
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Affiliation(s)
- Linas Andreika
- Clinic of Obstetrics and Gynecology, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Čiurlionio Str. 21/27, LT-03101 Vilnius, Lithuania
| | - Karolina Vankevičienė
- Faculty of Medicine, Vilnius University, M. K. Čiurlionio Str. 21/27, LT-03101 Vilnius, Lithuania
| | - Diana Ramašauskaitė
- Clinic of Obstetrics and Gynecology, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Čiurlionio Str. 21/27, LT-03101 Vilnius, Lithuania
| | - Vilius Rudaitis
- Clinic of Obstetrics and Gynecology, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, M. K. Čiurlionio Str. 21/27, LT-03101 Vilnius, Lithuania
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Leone Roberti Maggiore U, Spanò Bascio L, Alboni C, Chiarello G, Savelli L, Bogani G, Martinelli F, Chiappa V, Ditto A, Raspagliesi F. Sentinel lymph node biopsy in endometrial cancer: When, how and in which patients. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2024; 50:107956. [PMID: 38286085 DOI: 10.1016/j.ejso.2024.107956] [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: 08/28/2023] [Revised: 12/27/2023] [Accepted: 01/08/2024] [Indexed: 01/31/2024]
Abstract
The role of nodal dissection in patients with endometrial cancer has been intensively studied in several studies. Historically, systematic pelvic and para-aortic lymphadenectomy represented the gold standard surgical treatment to assess potential nodal involvement and consequently define the appropriate stage of the tumor. Over the last years, sentinel node biopsy (SLNB) has been introduced as a more targeted alternative to lymph node dissection for lymph node staging and it has become popular among gynecologic oncologists. However, no level A evidence is still available, and several features of the SLNB technique have been matter of discussion among clinicians and a universally accepted methodology is still not currently available. This narrative review aims to summarize the body of knowledge on SLNB to offer the reader a complete picture about the evolution of this technique over the last decades.
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Affiliation(s)
| | - Ludovica Spanò Bascio
- Obstetrics and Gynecology, Policlinico Modena, University of Modena and Reggio Emilia, Modena, Italy
| | - Carlo Alboni
- Obstetrics and Gynecology, Policlinico Modena, University of Modena and Reggio Emilia, Modena, Italy
| | - Giulia Chiarello
- Department of Biomedical Sciences and Human Oncology, University of Bari, Italy
| | - Luca Savelli
- Obstetrics and Gynecology Unit, Morgagni-Pierantoni Hospital, Forlì, Italy
| | - Giorgio Bogani
- Gynecologic Oncology Unit, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milan, Italy
| | - Fabio Martinelli
- Gynecologic Oncology Unit, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milan, Italy
| | - Valentina Chiappa
- Gynecologic Oncology Unit, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milan, Italy
| | - Antonino Ditto
- Gynecologic Oncology Unit, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milan, Italy
| | - Francesco Raspagliesi
- Gynecologic Oncology Unit, Fondazione IRCCS Istituto Nazionale Dei Tumori, Milan, Italy
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Chiang S, Tessier-Cloutier B, Klein E, Ardon O, Mueller JJ, Leitao MM, Abu-Rustum NR, Ellenson LH. Establishing guidelines for sentinel lymph node ultrastaging in endometrial cancer. Int J Gynecol Cancer 2024:ijgc-2023-005157. [PMID: 38388180 DOI: 10.1136/ijgc-2023-005157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Many sentinel lymph node (SLN) ultrastaging protocols for endometrial cancer exist, but there is no consensus method. OBJECTIVE This study aims to develop guidelines for size criteria in SLN evaluation for endometrial cancer, to determine whether a single cytokeratin AE1:AE3 immunohistochemical slide provides sufficient data for diagnosis, and to compare cost efficiency between current and limited ultrastaging protocols at a large tertiary care institution. METHODS Our current SLN ultrastaging protocol consists of cutting two adjacent paraffin block sections at two levels (L1 and L2), 50 μm apart, with two slides at each level stained with hematoxylin and eosin and cytokeratin AE1:AE3 immunohistochemistry. We retrospectively reviewed digitized L1 and L2 slides of all positive ultrastaged SLNs from patients treated for endometrial cancer between January 2013 and January 2020. SLN diagnosis was defined by measuring the largest cluster of contiguous tumor cells in a single cross section: macrometastasis (>2.0 mm), micrometastasis (>0.2 to ≤2.0 mm or >200 cells), or isolated tumor cells (≤0.2 mm or ≤200 cells). Concordance between L1 and L2 results was evaluated. Cost efficiency between current (two immunohistochemical slides per block) and proposed limited (one immunohistochemical slide per block) protocols was compared. RESULTS Digitized slides of 147 positive SLNs from 109 patients were reviewed; 4.1% of SLNs were reclassified based on refined size criteria. Complete concordance between L1 and L2 interpretations was seen in 91.8% of SLNs. A false-negative rate of 0%-0.9% in detecting micrometastasis and macrometastasis using a limited protocol was observed. Estimated charge-level savings of a limited protocol were 50% per patient. CONCLUSION High diagnostic accuracy in SLN interpretation may be achieved using a limited ultrastaging protocol of one immunohistochemical slide per block and linear measurement of the largest cluster of contiguous tumor cells. Implementation of the proposed limited ultrastaging protocol may result in laboratory cost savings with minimal impact on health outcomes.
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Affiliation(s)
- Sarah Chiang
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Basile Tessier-Cloutier
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Eric Klein
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Orly Ardon
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Jennifer J Mueller
- Department of Surgery, Gynecology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Mario M Leitao
- Department of Surgery, Gynecology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nadeem R Abu-Rustum
- Department of Surgery, Gynecology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Lora H Ellenson
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
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9
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Ren Z, Chen B, Hong C, Yuan J, Deng J, Chen Y, Ye J, Li Y. The value of machine learning in preoperative identification of lymph node metastasis status in endometrial cancer: a systematic review and meta-analysis. Front Oncol 2023; 13:1289050. [PMID: 38173835 PMCID: PMC10761539 DOI: 10.3389/fonc.2023.1289050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/06/2023] [Indexed: 01/05/2024] Open
Abstract
Background The early identification of lymph node metastasis status in endometrial cancer (EC) is a serious challenge in clinical practice. Some investigators have introduced machine learning into the early identification of lymph node metastasis in EC patients. However, the predictive value of machine learning is controversial due to the diversity of models and modeling variables. To this end, we carried out this systematic review and meta-analysis to systematically discuss the value of machine learning for the early identification of lymph node metastasis in EC patients. Methods A systematic search was conducted in Pubmed, Cochrane, Embase, and Web of Science until March 12, 2023. PROBAST was used to assess the risk of bias in the included studies. In the process of meta-analysis, subgroup analysis was performed according to modeling variables (clinical features, radiomic features, and radiomic features combined with clinical features) and different types of models in various variables. Results This systematic review included 50 primary studies with a total of 103,752 EC patients, 12,579 of whom had positive lymph node metastasis. Meta-analysis showed that among the machine learning models constructed by the three categories of modeling variables, the best model was constructed by combining radiomic features with clinical features, with a pooled c-index of 0.907 (95%CI: 0.886-0.928) in the training set and 0.823 (95%CI: 0.757-0.890) in the validation set, and good sensitivity and specificity. The c-index of the machine learning model constructed based on clinical features alone was not inferior to that based on radiomic features only. In addition, logistic regression was found to be the main modeling method and has ideal predictive performance with different categories of modeling variables. Conclusion Although the model based on radiomic features combined with clinical features has the best predictive efficiency, there is no recognized specification for the application of radiomics at present. In addition, the logistic regression constructed by clinical features shows good sensitivity and specificity. In this context, large-sample studies covering different races are warranted to develop predictive nomograms based on clinical features, which can be widely applied in clinical practice. Systematic review registration https://www.crd.york.ac.uk/PROSPERO, identifier CRD42023420774.
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Affiliation(s)
- Zhonglian Ren
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
| | - Banghong Chen
- Data Science R&D Center of Yanchang Technology, Chengdu, China
| | - Changying Hong
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
| | - Jiaying Yuan
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
| | - Junying Deng
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
| | - Yan Chen
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
| | - Jionglin Ye
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
| | - Yanqin Li
- Department of Obstetrics and Gynecology, Chengdu Shuangliu Distract Maternal and Child Health Hospital, Chengdu, China
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10
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Lee D, Kim YN, Cho SH, Yoon HS, Kim YT, Kim S, Kim SW. Comparison of progression-free survival outcome of sentinel node biopsy without ultrastaging versus lymphadenectomy in endometrial cancer: a propensity-matched analysis. J Gynecol Oncol 2023; 34:e79. [PMID: 37477102 PMCID: PMC10627756 DOI: 10.3802/jgo.2023.34.e79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 05/31/2023] [Accepted: 06/24/2023] [Indexed: 07/22/2023] Open
Abstract
OBJECTIVE We aimed to investigate the oncologic outcomes of patients with endometrial cancer who underwent sentinel lymph node (SLN) biopsy without ultrastaging compared with that of those who underwent lymphadenectomy (LND). METHODS Patients with endometrial cancer who underwent staging with SLN biopsy or LND during 2006 - 2021 were analyzed using propensity score matching (PSM). SLN metastasis was examined using hematoxylin and eosin staining, without ultrastaging. Progression-free survival (PFS) was compared between the two groups before and after PSM using age, histology, and stage as covariates. Clinical variables such as recurrence patterns and lymphatic complications, were assessed. RESULTS After excluding 213 patients who underwent validation LND with SLN biopsy, 902 were identified. The demographics of the remaining patients differed according to histology, myometrial invasion depth, and stage. Lymph node metastasis was less frequent in the SLN group than in the LND group (9.4% vs. 3.8%, p=0.004). The recurrence rates within 2 years were lower in the SLN group. The SLN group exhibited significantly superior 2-year and overall PFS than the LND group. Among patients with uterus-confined disease, overall PFS was favorable for SLN biopsy. After matching, differences in PFS were no longer observed, although the lymphocele and lymphedema rates were significantly lower in the SLN group. CONCLUSION In patients with endometrial cancer, SLN biopsy without ultrastaging did not compromise survival outcomes and was associated with significantly reduced lymphatic complication rates compared with LND. Therefore, SLN biopsy can be recommended for patients with endometrial cancer without definitive preoperative evidence of distant metastasis.
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Affiliation(s)
- Dahye Lee
- Department of Obstetrics and Gynecology, Women's Cancer Center, Yonsei Cancer Center, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Yoo-Na Kim
- Department of Obstetrics and Gynecology, Women's Cancer Center, Yonsei Cancer Center, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Hyun Cho
- Department of Obstetrics and Gynecology, Seoul St. Mary's hospital, The Catholic University of Korea, Seoul, Korea
| | - Hye Soo Yoon
- Department of Obstetrics and Gynecology, Women's Cancer Center, Yonsei Cancer Center, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Young Tae Kim
- Department of Obstetrics and Gynecology, Women's Cancer Center, Yonsei Cancer Center, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Sunghoon Kim
- Department of Obstetrics and Gynecology, Women's Cancer Center, Yonsei Cancer Center, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Wun Kim
- Department of Obstetrics and Gynecology, Women's Cancer Center, Yonsei Cancer Center, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea.
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11
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Cabrera S, Gómez-Hidalgo NR, García-Pineda V, Bebia V, Fernández-González S, Alonso P, Rodríguez-Gómez T, Fusté P, Gracia-Segovia M, Lorenzo C, Chacon E, Roldan Rivas F, Arencibia O, Martí Edo M, Fidalgo S, Sanchis J, Padilla-Iserte P, Pantoja-Garrido M, Martínez S, Peiró R, Escayola C, Oliver-Pérez MR, Aghababyan C, Tauste C, Morales S, Torrent A, Utrilla-Layna J, Fargas F, Calvo A, Aller de Pace L, Gil-Moreno A. Accuracy and Survival Outcomes after National Implementation of Sentinel Lymph Node Biopsy in Early Stage Endometrial Cancer. Ann Surg Oncol 2023; 30:7653-7662. [PMID: 37633852 PMCID: PMC10562309 DOI: 10.1245/s10434-023-14065-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 06/23/2023] [Indexed: 08/28/2023]
Abstract
BACKGROUND Sentinel lymph node (SLN) biopsy has recently been accepted to evaluate nodal status in endometrial cancer at early stage, which is key to tailoring adjuvant treatments. Our aim was to evaluate the national implementation of SLN biopsy in terms of accuracy to detect nodal disease in a clinical setting and oncologic outcomes according to the volume of nodal disease. PATIENTS AND METHODS A total of 29 Spanish centers participated in this retrospective, multicenter registry including patients with endometrial adenocarcinoma at preoperative early stage who had undergone SLN biopsy between 2015 and 2021. Each center collected data regarding demographic, clinical, histologic, therapeutic, and survival characteristics. RESULTS A total of 892 patients were enrolled. After the surgery, 12.9% were suprastaged to FIGO 2009 stages III-IV and 108 patients (12.1%) had nodal involvement: 54.6% macrometastasis, 22.2% micrometastases, and 23.1% isolated tumor cells (ITC). Sensitivity of SLN biopsy was 93.7% and false negative rate was 6.2%. After a median follow up of 1.81 years, overall surivial and disease-free survival were significantly lower in patients who had macrometastases when compared with patients with negative nodes, micrometastases or ITC. CONCLUSIONS In our nationwide cohort we obtained high sensitivity of SLN biopsy to detect nodal disease. The oncologic outcomes of patients with negative nodes and low-volume disease were similar after tailoring adjuvant treatments. In total, 22% of patients with macrometastasis and 50% of patients with micrometastasis were at low risk of nodal metastasis according to their preoperative risk factors, revealing the importance of SLN biopsy in the surgical management of patients with early stage EC.
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Affiliation(s)
- Silvia Cabrera
- Gynecologic Oncology Unit, Hospital Vall d'Hebron, Vall d'Hebron Barcelona Hospital Campus, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain.
| | - Natalia R Gómez-Hidalgo
- Gynecologic Oncology Unit, Hospital Vall d'Hebron, Vall d'Hebron Barcelona Hospital Campus, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | | | - Vicente Bebia
- Gynecologic Oncology Unit, Hospital Vall d'Hebron, Vall d'Hebron Barcelona Hospital Campus, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | | | - Paula Alonso
- Department of Obstetrics and Gynecology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Tomás Rodríguez-Gómez
- Department of Obstetrics and Gynecology, Hospital Virgen de la Victoria, Málaga, Spain
| | - Pere Fusté
- Gynecologic Oncology Unit, Hospital Clínic i Provincial de Barcelona, Barcelona, Spain
| | | | - Cristina Lorenzo
- Department of Obstetrics and Gynecology, Hospital Universitario Nuestra Señora de Candelaria, Tenerife, Spain
| | - Enrique Chacon
- Department of Obstetrics and Gynecology, Clinica Universidad de Navarra, Pamplona, Spain
| | - Fernando Roldan Rivas
- Department of Obstetrics and Gynecology, Hospital Clínico Universitario de Zaragoza, Zaragoza, Spain
| | - Octavio Arencibia
- Department of Obstetrics and Gynecology, Hospital Universitario Gran Canarias Dr. Negrín, Las Palmas, Spain
| | - Marina Martí Edo
- Department of Obstetrics and Gynecology, Hospital General Universitario de Ciudad Real, Ciudad Real, Spain
| | - Soledad Fidalgo
- Department of Obstetrics and Gynecology, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Josep Sanchis
- Gynecologic Oncology Unit, Instituto Valenciano de Oncologia (IVO), Valencia, Spain
| | - Pablo Padilla-Iserte
- Gynecologic Oncology Unit, Hospital Politécnico Universitario La Fe, Valencia, Spain
| | - Manuel Pantoja-Garrido
- Department of Obstetrics and Gynecology, Hospital Universitario Virgen Macarena, Sevilla, Spain
| | - Sergio Martínez
- Department of Gynecology, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Ricard Peiró
- Department of Obstetrics and Gynecology, Hospital General de Catalunya, Barcelona, Spain
| | - Cecilia Escayola
- Department of Obstetrics and Gynecology, El Pilar Quiron, Barcelona, Spain
| | - M Reyes Oliver-Pérez
- Gynecologic Oncology Unit, Department of Obstetrics and Gynecology, Hospital Universitario 12 de Octubre, 12 de Octubre Research Institute (i+12), Complutense University of Madrid, Madrid, Spain
| | - Cristina Aghababyan
- Department of Obstetrics and Gynecology, Hospital General Universitario de Valencia, Valencia, Spain
| | - Carmen Tauste
- Department of Obstetrics and Gynecology, Hospital Universitario de Navarra, Pamplona, Spain
| | - Sara Morales
- Department of Obstetrics and Gynecology, Hospital Infanta Leonor, Madrid, Spain
| | - Anna Torrent
- Department of Obstetrics and Gynecology, Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - Jesus Utrilla-Layna
- Department of Obstetrics and Gynecology, Fundación Jimenez Diaz, Madrid, Spain
| | - Francesc Fargas
- Department of Obstetrics and Gynecology, Hospital Universitari Quirón Dexeus, Barcelona, Spain
| | - Ana Calvo
- Department of Obstetrics and Gynecology, Hospital Universitari Arnau de Vilanova, Lleida, Spain
| | - Laura Aller de Pace
- Department of Obstetrics and Gynecology, Hospital Marqués de Valdecilla, Santander, Spain
| | - Antonio Gil-Moreno
- Gynecologic Oncology Unit, Hospital Vall d'Hebron, Vall d'Hebron Barcelona Hospital Campus, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
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12
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La Fera E, Bizzarri N, Petrecca A, Monterossi G, Dinoi G, Zannoni GF, Restaino S, Palmieri E, Mariuzzi L, Peters I, Scambia G, Fanfani F. Evaluation of the one-step nucleic acid amplification method for rapid detection of lymph node metastases in endometrial cancer: prospective, multicenter, comparative study. Int J Gynecol Cancer 2023:ijgc-2023-004346. [PMID: 37105584 DOI: 10.1136/ijgc-2023-004346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
OBJECTIVE To evaluate the diagnostic performance of the one-step nucleic acid amplification (OSNA) method for the detection of sentinel lymph node (SLN) metastases in women with apparent early-stage endometrial cancer compared with standard ultrastaging. METHODS Prospective, multicentric, interventional study. Patients with apparent early-stage endometrial cancer who underwent primary surgical staging with SLN mapping were included. SLNs were serially sectioned with 2 mm slices perpendicular to the longest axis of the node: the odd slices were submitted to ultrastaging, whereas the even slices were submitted to the OSNA analysis. Diagnostic performance was calculated taking ultrastaging as referral standard. RESULTS Three-hundred and sixteen patients with 668 SLNs were included. OSNA assay detected 22 (3.3%) positive SLNs, of which 17 (2.5%) were micrometastases and 5 (0.7%) macrometastases, whereas ultrastaging detected 24 (3.6%) positive SLNs, of which 15 (2.2%) were micrometastases and 9 (1.3%) macrometastases (p=0.48). Regarding negative SLNs, OSNA detected 646 (96.7%) negative nodes, including 8 (1.2%) isolated tumor cells, while ultrastaging detected 644 (96.4%) negative nodes with 26 (3.9%) isolated tumor cells. Specificity of OSNA was 98.4% (95% CI 97.5 to 99.4), accuracy was 96.7% (95% CI 95.4 to 98.1), sensitivity was 50% (95% CI 30.0 to 70.0), while negative predictive value was 98.1% (95% CI 97.1 to 99.2). Discordant results were found in 22 SLNs (3.3%) corresponding to 20 patients (6.3%). These were 10 (1.5%) false-positive SLNs (all micrometastases): one (0.1%) of these was a benign epithelial inclusion at ultrastaging. There were 12 (1.8%) false-negative SLNs of OSNA, of which 9 (1.3%) were micrometastases and 3 (0.5%) macrometastases. Overall, 17/668 (2.5%) benign epithelial inclusions were detected at ultrastaging. CONCLUSION The OSNA method had high specificity and high accuracy in detecting SLN metastasis in apparent early-stage endometrial cancer. The advantage of the OSNA method could be represented as the possibility to analyze the entire lymph node thus eliminating sampling bias.
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Affiliation(s)
- Eleonora La Fera
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Nicolò Bizzarri
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Alessandro Petrecca
- Università Cattolica del Sacro Cuore Scuole di Specializzazione, Roma, Italy
| | - Giorgia Monterossi
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Giorgia Dinoi
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Gian Franco Zannoni
- Unità di Ginecopatologia e Patologia Mammaria, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Stefano Restaino
- Department of Medicinal Area (DAME) Clinic of Obstetrics and Gynecology, Santa Maria della Misericordia University Hospital, Udine, Italy
| | - Emilia Palmieri
- Università Cattolica del Sacro Cuore Scuole di Specializzazione, Roma, Italy
| | - Laura Mariuzzi
- Institute of Pathologic Anatomy, DAME, Santa Maria della Misericordia University Hospital, Udine, Italy
| | - Inge Peters
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
| | - Giovanni Scambia
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
- Università Cattolica del Sacro Cuore, Roma, Italy
| | - Francesco Fanfani
- UOC Ginecologia Oncologica, Dipartimento per la salute della Donna e del Bambino e della Salute Pubblica, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy
- Università Cattolica del Sacro Cuore, Roma, Italy
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13
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Marchocki Z, Cusimano MC, Vicus D, Pulman K, Rouzbahman M, Mirkovic J, Cesari M, Maganti M, Zia A, Ene G, Ferguson SE. Diagnostic accuracy of frozen section and patterns of nodal spread in high grade endometrial cancer: A secondary outcome of the SENTOR prospective cohort study. Gynecol Oncol 2023; 173:41-48. [PMID: 37075495 DOI: 10.1016/j.ygyno.2023.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 01/24/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023]
Abstract
OBJECTIVES The study aimed to define the accuracy of intraoperative frozen section (FS) for the detection of metastases in sentinel lymph node biopsy (SLNB) and describe the pattern of lymph node (LN) spread and relation to molecular classifiers in patients with high-grade endometrial cancer (EC). METHODS We performed a secondary outcome of clinicopathologic data from the Sentinel Lymph Node Biopsy versus Lymphadenectomy for Intermediate- and High-Grade Endometrial Cancer Staging (SENTOR) prospective cohort study evaluating SLNB in patients with clinical stage I high-grade EC (ClinicalTrials.gov ID: NCT01886066). The primary outcome was the sensitivity of FS of the sentinel lymph node (SLN) specimen, compared to a standardized ultrastaging protocol. Secondary outcomes included the pattern and characteristics of LN spread. RESULTS There were 126 patients with high-grade EC with a median age of 66 years (range:44-86) and a median Body Mass Index (BMI) of 26.9 kg/m2 (range:17.6-49.3). FS was performed on surgical specimens from 212 hemipelves; SLNs were identified in 202 specimens (95.7%) and fatty tissue alone was identified in 10 specimens (4.7%). Of the 202 hemipelves in which SLNs were identified, 24 were positive for metastatic disease on final pathology. Initial FS correctly identified only 12, yielding a sensitivity of 50% (12/24, 95% CI 29.6-70.4) and a negative predictive value of 94% (178/190, 95% CI 89-96.5). A total of 24 patients (19%) had LN metastases: 16 (13%) had isolated pelvic metastases, 7 (6%) had both pelvic and para-aortic metastases and 1 (0.8%) had an isolated para-aortic metastasis. CONCLUSIONS Intraoperative FS of SLNs in high-grade EC patients has poor sensitivity. Since isolated para-aortic metastases are rare, para-aortic lymphadenectomy may be omitted in patients in which SLNs were successfully mapped to the pelvis.
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Affiliation(s)
- Zibi Marchocki
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada; Division of Gynecologic Oncology, University Health Network/Sinai Health Systems, Toronto, Ontario, Canada; Department of Obstetrics and Gynaecology, University College Cork, Cork, Ireland
| | - Maria C Cusimano
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada
| | - Danielle Vicus
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada; Division of Gynecologic Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Katherine Pulman
- Gynecologic Oncology Program, Trillium Health Partners, Mississauga, Ontario, Canada
| | - Marjan Rouzbahman
- Laboratory Medicine Program, University Health Network, Toronto, Ontario, Canada
| | - Jelena Mirkovic
- Department of Anatomic Pathology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Matthew Cesari
- Laboratory Medicine and Genetics Program, Trillium Health Partners, Mississauga, Ontario, Canada
| | - Manjula Maganti
- Biostatistics Research Unit, University Health Network, Toronto, Ontario, Canada
| | - Aysha Zia
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada
| | - Gabrielle Ene
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada
| | - Sarah E Ferguson
- Department of Obstetrics and Gynaecology, University of Toronto, Toronto, Ontario, Canada; Division of Gynecologic Oncology, University Health Network/Sinai Health Systems, Toronto, Ontario, Canada.
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14
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The Premetastatic Lymph Node Niche in Gynecologic Cancer. Int J Mol Sci 2023; 24:ijms24044171. [PMID: 36835583 PMCID: PMC9959967 DOI: 10.3390/ijms24044171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/06/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
It has been suggested that a primary tumor can "prepare" the draining of lymph nodes to "better accommodate" future metastatic cells, thus implying the presence of a premetastatic lymph node niche. However, this phenomenon remains unclear in gynecological cancers. The aim of this study was to evaluate lymph-node draining in gynecological cancers for premetastatic niche factors, such as myeloid-derived suppressor cells (MDSCs), immunosuppressive macrophages, cytotoxic T cells, immuno-modulatory molecules, and factors of the extracellular matrix. This is a monocentric retrospective study of patients who underwent lymph-node excision during their gynecological-cancer treatment. In all, 63 non-metastatic pelvic or inguinal lymph nodes, 25 non-metastatic para-aortic lymph nodes, 13 metastatic lymph nodes, and 21 non-cancer-associated lymph nodes (normal controls) were compared for the immunohistochemical presence of CD8 cytotoxic T cells, CD163 M2 macrophages, S100A8/A9 MDSCs, PD-L1+ immune cells, and tenascin-C, which is a matrix remodeling factor. PD-L1-positive immune cells were significantly higher in the control group, in comparison to the regional and distant cancer-draining lymph nodes. Tenascin-C was higher in metastatic lymph nodes than in both non-metastatic nodes and control lymph nodes. Vulvar cancer-draining lymph nodes showed higher PD-L1 values than endometrial cancer and cervical cancer-draining lymph nodes. Endometrial cancer-draining nodes had higher CD163 values and lower CD8 values, compared to vulvar cancer-draining nodes. Regarding regional draining nodes in low- and high-grade endometrial tumors, the former showed lower S100A8/A9 and CD163 values. Gynecological cancer-draining lymph nodes are generally immunocompetent, but vulvar cancer draining nodes, as well as high-grade endometrial cancer draining nodes, are more susceptible to harboring premetastatic niche factors.
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15
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Gedgaudaite M, Paskauskas S, Bartusevicius A, Celiesiute J, Svedas E, Vaitkiene D, Drejeriene E, Inciura A, Gaurilcikas A. Laparoscopic sentinel lymph node mapping with indocyanine green in endometrial cancer: surgeon's learning curve (cumulative sum analysis). Int J Gynecol Cancer 2023; 33:521-527. [PMID: 36787934 PMCID: PMC10086453 DOI: 10.1136/ijgc-2022-004033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
Abstract
OBJECTIVES To evaluate surgeons' learning curves for laparoscopic sentinel lymph node biopsy in endometrial cancer. METHODS A prospective observational study was performed at the Oncogynecology Center, Lithuanian University of Health Sciences Hospital, from March 2018 to October 2022. Participating surgeons had no previous experience of laparoscopic sentinel lymph node biopsy with indocyanine green tracer. Cumulative sum analysis was used to create learning curves for the performance of eight surgeons, based on a specific result over a time period. Two different cumulative sum plots were made for each surgeon: successful bilateral sentinel lymph node mapping and removal of sentinel lymph node specimens containing actual lymphatic tissue. RESULTS 190 patients were included. The overall rate of sentinel lymph node mapping was 89.5%: successful bilateral mapping was achieved in 134 (70.5%) patients, while in 36 (19%) patients sentinel lymph nodes were mapped unilaterally. The bilateral detection rate significantly improved in later study periods (from 59.3% in the first year to 85.0% in the last year; p=0.03). Analysis of the performance of the surgeons for bilateral sentinel lymph node mapping showed that the cumulative sum plot crossed the H0 limit line after 13 consecutive successful bilateral sentinel lymph node biopsies, indicating an acceptable level of competence to achieve the bilateral detection rate of at least 75%. This was accomplished by only one surgeon after 30 surgeries. Analysis of the performance of the surgeons for identification and removal of specimens containing histologically confirmed lymphatic tissue showed that the cumulative sum plots crossed the H0 limit line after six consecutive successful sentinel lymph node removals. This was accomplished by most of the surgeons (5 of 8). CONCLUSION At least 30 procedures of indocyanine green traced laparoscopic sentinel lymph node biopsy were needed to reach an acceptable level of competence for a bilateral sentinel lymph node detection rate of at least 75%. TRIAL REGISTRATION NUMBER ACTRN12619000979156.
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Affiliation(s)
- Migle Gedgaudaite
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Saulius Paskauskas
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Arnoldas Bartusevicius
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Joana Celiesiute
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Eimantas Svedas
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Daiva Vaitkiene
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Egle Drejeriene
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Arturas Inciura
- Institute of Oncology, Clinic of Oncology and Hematology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Adrius Gaurilcikas
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas, Lithuania
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16
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Abu-Rustum N, Yashar C, Arend R, Barber E, Bradley K, Brooks R, Campos SM, Chino J, Chon HS, Chu C, Crispens MA, Damast S, Fisher CM, Frederick P, Gaffney DK, Giuntoli R, Han E, Holmes J, Howitt BE, Lea J, Mariani A, Mutch D, Nagel C, Nekhlyudov L, Podoll M, Salani R, Schorge J, Siedel J, Sisodia R, Soliman P, Ueda S, Urban R, Wethington SL, Wyse E, Zanotti K, McMillian NR, Aggarwal S. Uterine Neoplasms, Version 1.2023, NCCN Clinical Practice Guidelines in Oncology. J Natl Compr Canc Netw 2023; 21:181-209. [PMID: 36791750 DOI: 10.6004/jnccn.2023.0006] [Citation(s) in RCA: 102] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Adenocarcinoma of the endometrium (also known as endometrial cancer, or more broadly as uterine cancer or carcinoma of the uterine corpus) is the most common malignancy of the female genital tract in the United States. It is estimated that 65,950 new uterine cancer cases will have occurred in 2022, with 12,550 deaths resulting from the disease. Endometrial carcinoma includes pure endometrioid cancer and carcinomas with high-risk endometrial histology (including uterine serous carcinoma, clear cell carcinoma, carcinosarcoma [also known as malignant mixed Müllerian tumor], and undifferentiated/dedifferentiated carcinoma). Stromal or mesenchymal sarcomas are uncommon subtypes accounting for approximately 3% of all uterine cancers. This selection from the NCCN Guidelines for Uterine Neoplasms focuses on the diagnosis, staging, and management of pure endometrioid carcinoma. The complete version of the NCCN Guidelines for Uterine Neoplasms is available online at NCCN.org.
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Affiliation(s)
| | | | | | - Emma Barber
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University
| | | | | | - Susana M Campos
- Dana-Farber/Brigham and Women's Cancer Center
- Massachusetts General Hospital Cancer Center
| | | | | | | | | | | | | | | | | | | | | | - Jordan Holmes
- Indiana University Melvin and Bren Simon Comprehensive Cancer Center
| | | | - Jayanthi Lea
- UT Southwestern Simmons Comprehensive Cancer Center
| | | | - David Mutch
- Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine
| | - Christa Nagel
- The Ohio State University Comprehensive Cancer Center - James Cancer Hospital and Solove Research Institute
| | - Larissa Nekhlyudov
- Dana-Farber/Brigham and Women's Cancer Center
- Massachusetts General Hospital Cancer Center
| | | | | | - John Schorge
- St. Jude Children's Research Hospital/The University of Tennessee Health Science Center
| | | | - Rachel Sisodia
- Dana-Farber/Brigham and Women's Cancer Center
- Massachusetts General Hospital Cancer Center
| | | | - Stefanie Ueda
- UCSF Helen Diller Family Comprehensive Cancer Center
| | | | | | | | - Kristine Zanotti
- Case Comprehensive Cancer Center/University Hospitals Seidman Cancer Center and Cleveland Clinic Taussig Cancer Institute
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The Role of Sentinel Lymph Node Mapping in High-grade Endometrial Cancer. Curr Treat Options Oncol 2022; 23:1339-1352. [PMID: 35980519 DOI: 10.1007/s11864-022-00999-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2022] [Indexed: 11/03/2022]
Abstract
OPINION STATEMENT Total hysterectomy with lymph node assessment is the current standard-of-care for surgical staging in apparent early-stage endometrial cancer. Compared to the traditional complete pelvic lymphadenectomy with or without para-aortic lymphadenectomy, sentinel lymph node (SLN) mapping results in fewer surgical complications, decreased operative time, and lower rates of chronic lymphedema. The technique is endorsed by the National Comprehensive Cancer Network and the Society of Gynecologic Oncology guidelines, and over the past two decades the majority of gynecologic oncologists worldwide have adopted SLN mapping into their practice. However, as the results of the initial SLN studies were mostly based on low-grade tumors, adoption of the technique in high-grade tumors has been slower and more controversial. In this review, we discuss the most recent studies evaluating the SLN mapping in high-grade endometrial cancers. The results of these studies suggest that the SLN detection rate is acceptably high and the negative predictive value is sufficiently low to support the use of SLN mapping in high-grade endometrial tumors to replace complete lymphadenectomy. Validity of SLN mapping techniques does, however, require following a standard algorithm, and success depends also on surgeon expertise. Moreover, the impact of SLN mapping on overall survival in high-grade tumors requires future prospective randomized studies. Finally, a transition toward near-universal SLN mapping techniques for endometrial cancers could significantly impact on the adequacy of gynecologic oncology fellows' surgical training and competency in lymphadenectomy.
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Rau TT, Deppeler MV, Christe L, Siegenthaler F, Imboden S, Papadia A, Mueller MD. Pathological processing of sentinel lymph nodes in endometrial carcinoma - routine aspects of grossing, ultra-staging, and surgico-pathological parameters in a series of 833 lymph nodes. Virchows Arch 2022; 481:421-432. [PMID: 35854139 PMCID: PMC9485184 DOI: 10.1007/s00428-022-03377-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 06/17/2022] [Accepted: 07/03/2022] [Indexed: 11/26/2022]
Abstract
Sentinel lymph nodes are widely accepted in the treatment of endometrial carcinoma. Whereas surgical aspects are well studied, the pathological work-up in terms of grossing, frozen section, and the so-called ultra-staging is still a matter of debate. This results in conflicting national or center-based recommendations. In a series of consecutive 833 sentinel lymph nodes from 206 patients in endometrial carcinomas, we compared three different grossing techniques and the use of frozen section in terms of anatomy, detection rates, and survival. In total, 42 macro-metastases, 6 micro-metastases, and 25 nodes with isolated tumor cells were found. Lymph nodes affected at least with micro-metastasis were about 0.5cm enlarged. Detection rates in lamellation technique increased with a step of 5.9% to 8.3% in comparison to bi-valved or complete embedding. The lamellation technique presented with a slight beneficial prognosis in pN0 subgroup (OS, p=0.05), which besides size effects might be attributed to trimming loss. In frozen section, this effect was less pronounced than expected (OS, p=0.56). Ultra-staging only revealed additional micro-metastases and isolated tumor cells. Exclusively, macro-metastases showed poor survival (p<0.001). In multivariate analysis, T-stage, subtype, and lympho-vascular invasion status outperformed this staging parameter significantly. Grossing of sentinel lymph nodes is the most essential step with evidence to prefer lamellation in 2 mm steps. Step sectioning should consider widely spaced protocols to exclude macro-metastases. Frozen sections might add value to the intra-operative assessment of endometrial carcinoma in selected cases. The excellent biological behavior of cases with isolated tumor cells might question the routine application of pan-cytokeratin as ultra-staging method.
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Affiliation(s)
- Tilman T Rau
- Institute of Pathology, University Hospital Düsseldorf, Moorenstr. 5, 40235, Düsseldorf, Germany.
- Institute of Pathology, University Bern, Murtenstrasse 31, 3008, Bern, Switzerland.
| | - Mona V Deppeler
- Institute of Pathology, University Bern, Murtenstrasse 31, 3008, Bern, Switzerland
| | - Lucine Christe
- Institute of Pathology, University Bern, Murtenstrasse 31, 3008, Bern, Switzerland
| | - Franziska Siegenthaler
- Department of Gynecology and Obstetrics, Inselspital University Hospital and University, Bern, Switzerland
| | - Sara Imboden
- Department of Gynecology and Obstetrics, Inselspital University Hospital and University, Bern, Switzerland
| | - Andrea Papadia
- Department of Gynecology and Obstetrics, Inselspital University Hospital and University, Bern, Switzerland
- Department of Gynecology and Obstetrics, Regional Hospital Lugano, Lugano, Switzerland
| | - Michael D Mueller
- Department of Gynecology and Obstetrics, Inselspital University Hospital and University, Bern, Switzerland
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Predictors for the Recurrence of Clinically Uterine-Confined Endometrial Cancer and the Role of Cytokeratin Immunohistochemistry Stain in the Era of Sentinel Lymph Node Mapping. Cancers (Basel) 2022; 14:cancers14081973. [PMID: 35454878 PMCID: PMC9031387 DOI: 10.3390/cancers14081973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary Sentinel lymph node (SLN) mapping in women with endometrial cancer is gradually gaining popularity worldwide. The objectives of this retrospective study were to elucidate the predictors for cancer recurrence in the era of SLN mapping, and to compare the clinical outcomes between SLN mapping and traditional lymphadenectomy, as well as to investigate the role of cytokeratin immunohistochemistry stain in detecting lymph node metastases. Para-aortic lymph node metastasis was found to be the sole predictor for cancer recurrence. Cytokeratin immunohistochemistry stain detects more lymph node metastases. In addition, both SLN mapping and traditional lymphadenectomy have similar probabilities of cancer recurrence. Abstract Background: The primary objective of this study was to elucidate the predictors for cancer recurrence in women with clinically uterine-confined endometrial cancer in the era of sentinel lymph node (SLN) mapping. Methods: All consecutive women with clinically determined uterine-confined endometrial cancer who had lymph node assessment by either SLN mapping or traditional pelvic lymphadenectomy were reviewed. Results: Women in the SLN mapping group had lower total dissected pelvic nodes, lower incidence of para-aortic lymph node dissection, less intraoperative blood loss and lower complication rates, but a longer operation time compared to the traditional lymphadenectomy group. Para-aortic lymph node metastasis (hazard ratio = 7.60, p = 0.03) was the sole independent predictor for recurrence-free survival. In addition, the utilization of cytokeratin immunohistochemistry stain detected more lymph node metastases (adjusted odds ratio = 3.04, p = 0.03). Recurrence-free survival did not differ between SLN mapping and traditional lymphadenectomy groups (p = 0.24). Conclusions: Para-aortic lymph node metastasis is an important predictor of cancer recurrence. Women with negative hematoxylin and eosin stain should undergo cytokeratin immunohistochemistry stain to increase the detection rate of positive lymph node metastasis. Besides, the probabilities of recurrence seem to be similar between SLN mapping and traditional lymphadenectomy groups in women with clinically uterine-confined endometrial cancer.
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Sentinel Lymph Node Mapping in High-Grade Endometrial Cancer. Curr Oncol 2022; 29:1123-1135. [PMID: 35200595 PMCID: PMC8870608 DOI: 10.3390/curroncol29020096] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 01/11/2023] Open
Abstract
Sentinel lymph node (SLN) mapping is becoming an acceptable alternative to full lymphadenectomy for evaluating lymphatic spread in clinical stage I endometrial cancer (EC). While the assessment of pelvic and para-aortic lymph nodes is part of the surgical staging of EC, there is a long-standing debate over the therapeutic value of full lymphadenectomy in this setting. Although lymphadenectomy offers critical information on lymphatic spread and prognosis, most patients will not derive oncologic benefit from this procedure as the majority of patients do not have lymph node involvement. SLN mapping offers prognostic information while simultaneously avoiding the morbidity associated with an extensive and often unnecessary lymphadenectomy. A key factor in the decision making when planning for EC surgery is the histologic subtype. Since the risk of lymphatic spread is less than 5% in low-grade EC, these patients might not benefit from lymph node assessment. Nonetheless, in high-grade EC, the risk for lymph node metastases is much higher (20–30%); therefore, it is crucial to determine the spread of disease both for determining prognosis and for tailoring the appropriate adjuvant treatment. Studies on the accuracy of SLN mapping in high-grade EC have shown a detection rate of over 90%. The available evidence supports adopting the SLN approach as an accurate method for surgical staging. However, there is a paucity of prospective data on the long-term oncologic outcome for patients undergoing SLN mapping in high-grade EC, and more trials are warranted to answer this question.
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Abstract
PURPOSE OF REVIEW To provide an overview of the current knowledge and recent advances of sentinel lymph node (SLN) assessment in uterine, cervical, vulvar, and ovarian cancers. RECENT FINDINGS In endometrial cancer, SLN evaluation has become increasingly utilized as part of the treatment of early-stage disease, with data showing improved detection of pelvic lymph node metastasis. In cervical cancer, SLN biopsy has also gained increasing traction with studies demonstrating the feasibility and accuracy of SLN detection. Evaluation with frozen section, however, remains limited in the detection of metastases. The prognostic significance of positive SLN in vulvar cancer is currently being investigated, with preliminary data showing lower recurrence rates in patients receiving adjuvant radiation. SUMMARY SLN evaluation remains standard of care to detect lymph node metastasis in early-staged endometrial cancer. In cervical cancer, SLN biopsy has been shown to be reliable, while decreasing morbidity without impacting disease-free survival in select patients. The technique and high sensitivity of SLN biopsy in vulvar cancer has been demonstrated in large prospective trials. There are no randomized controlled trials in ovarian cancer that evaluate the role of SLN biopsy on treatment and outcome; current SLN evaluation remains investigational.
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22
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Sentinel lymph node biopsy in high-grade endometrial cancer: a systematic review and meta-analysis of performance characteristics. Am J Obstet Gynecol 2021; 225:367.e1-367.e39. [PMID: 34058168 DOI: 10.1016/j.ajog.2021.05.034] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 12/21/2022]
Abstract
OBJECTIVE A sentinel lymph node biopsy is widely accepted as the standard of care for surgical staging in low-grade endometrial cancer, but its value in high-grade endometrial cancer remains controversial. The aim of this systematic review and meta-analysis was to evaluate the performance characteristics of sentinel lymph node biopsy in patients with endometrial cancer with high-grade histology (registered in the International Prospective Register of Systematic Reviews with identifying number CRD42020160280). DATA SOURCES We systematically searched the MEDLINE, Epub Ahead of Print, MEDLINE In-Process & Other Non-Indexed Citations, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Embase databases all through the OvidSP platform. The search was performed between January 1, 2000, and January 26, 2021. ClinicalTrials.gov was searched to identify ongoing registered clinical trials. STUDY ELIGIBILITY CRITERIA We included prospective cohort studies in which sentinel lymph node biopsy were evaluated in clinical stage I patients with high-grade endometrial cancer (grade 3 endometrioid, serous, clear cell, carcinosarcoma, mixed, undifferentiated or dedifferentiated, and high-grade not otherwise specified) with a cervical injection of indocyanine green for sentinel lymph node detection and at least a bilateral pelvic lymphadenectomy as a reference standard. If the data were not reported specifically for patients with high-grade histology, the authors were contacted for aggregate data. METHODS We pooled the detection rates and measures of diagnostic accuracy using a generalized linear mixed-effects model with a logit and assessed the risk of bias using the Quality Assessment of Diagnostic Accuracy Studies 2 tool. RESULTS We identified 16 eligible studies of which the authors for 9 of the studies provided data on 429 patients with high-grade endometrial cancer specifically. The study-level median age was 66 years (range, 44-82.5 years) and the study-level median body mass index was 28.6 kg/m2 (range, 19.4-43.7 kg/m2). The pooled detection rates were 91% per patient (95% confidence interval, 85%-95%; I2=59%) and 64% bilaterally (95% confidence interval, 53%-73%; I2=69%). The overall node positivity rate was 26% (95% confidence interval, 19%-34%; I2=44%). Of the 87 patients with positive node results, a sentinel lymph node biopsy correctly identified 80, yielding a pooled sensitivity of 92% per patient (95% confidence interval, 84%-96%; I2=0%), a false negative rate of 8% (95% confidence interval, 4%-16%; I2=0%), and a negative predictive value of 97% (95% confidence interval, 95%-99%; I2=0%). CONCLUSION Sentinel lymph node biopsy accurately detect lymph node metastases in patients with high-grade endometrial cancer with a false negative rate comparable with that observed in low-grade endometrial cancer, melanoma, vulvar cancer, and breast cancer. These findings suggest that sentinel lymph node biopsy can replace complete lymphadenectomies as the standard of care for surgical staging in patients with high-grade endometrial cancer.
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Diestro MD, Berjón A, Zapardiel I, Yébenes L, Ruiz I, Lekuona A, Rezola M, Jaunarena I, Siegrist J, Sánchez-Pastor M, Cuadra M, Sagasta A, Guerra I, Lete LI, Roldán F, Marta CB, Boillos MJ, Cardiel MJ, López-de la Manzanara C, Relea F, Coronado PJ, Pascual A, Román MJ, Peiró G, Matute LJ, Montero B, Muruzábal JC, Guarch R, Zorrero C, Calatrava A, Ribot L, Costa I, Hernández A, Hardisson D. One-Step Nucleic Acid Amplification (OSNA) of Sentinel Lymph Node in Early-Stage Endometrial Cancer: Spanish Multicenter Study (ENDO-OSNA). Cancers (Basel) 2021; 13:4465. [PMID: 34503275 PMCID: PMC8431061 DOI: 10.3390/cancers13174465] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 12/24/2022] Open
Abstract
The objective of this study was to evaluate the efficacy of one-step nucleic acid amplification (OSNA) for the detection of sentinel lymph node (SLN) metastasis compared to standard pathological ultrastaging in patients with early-stage endometrial cancer (EC). A total of 526 SLNs from 191 patients with EC were included in the study, and 379 SLNs (147 patients) were evaluated by both methods, OSNA and standard pathological ultrastaging. The central 1 mm portion of each lymph node was subjected to semi-serial sectioning at 200 μm intervals and examined by hematoxylin-eosin and immunohistochemistry with CK19; the remaining tissue was analyzed by OSNA for CK19 mRNA. The OSNA assay detected metastases in 19.7% of patients (14.9% micrometastasis and 4.8% macrometastasis), whereas pathological ultrastaging detected metastasis in 8.8% of patients (3.4% micrometastasis and 5.4% macrometastasis). Using the established cut-off value for detecting SLN metastasis by OSNA in EC (250 copies/μL), the sensitivity of the OSNA assay was 92%, specificity was 82%, diagnostic accuracy was 83%, and the negative predictive value was 99%. Discordant results between both methods were recorded in 20 patients (13.6%). OSNA resulted in an upstaging in 12 patients (8.2%). OSNA could aid in the identification of patients requiring adjuvant treatment at the time of diagnosis.
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Affiliation(s)
- María Dolores Diestro
- Gynecologic Oncology Unit, Department of Gynecology and Obstetrics, Hospital Universitario La Paz, Hospital La Paz Institute for Health Research (IdiPAZ), Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (I.Z.); (J.S.); (M.S.-P.); (A.H.)
| | - Alberto Berjón
- Department of Pathology, Hospital Universitario La Paz, Molecular Pathology and Therapeutic Targets Group, Hospital La Paz Institute for Health Research (IdiPAZ), Center for Biomedical Research in the Cancer Network (Centro de Investigación Biomédica en Red de Cáncer, CIBERONC), Instituto de Salud Carlos III, Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (A.B.); (L.Y.)
| | - Ignacio Zapardiel
- Gynecologic Oncology Unit, Department of Gynecology and Obstetrics, Hospital Universitario La Paz, Hospital La Paz Institute for Health Research (IdiPAZ), Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (I.Z.); (J.S.); (M.S.-P.); (A.H.)
| | - Laura Yébenes
- Department of Pathology, Hospital Universitario La Paz, Molecular Pathology and Therapeutic Targets Group, Hospital La Paz Institute for Health Research (IdiPAZ), Center for Biomedical Research in the Cancer Network (Centro de Investigación Biomédica en Red de Cáncer, CIBERONC), Instituto de Salud Carlos III, Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (A.B.); (L.Y.)
| | - Irune Ruiz
- Department of Pathology, Hospital Universitario Donostia Osakidetza, 20014 Donostia, Spain; (I.R.); (M.R.)
| | - Arantza Lekuona
- Department of Gynecology, Hospital Universitario Donostia Osakidetza, 20014 Donostia, Spain; (A.L.); (I.J.)
| | - Marta Rezola
- Department of Pathology, Hospital Universitario Donostia Osakidetza, 20014 Donostia, Spain; (I.R.); (M.R.)
| | - Ibon Jaunarena
- Department of Gynecology, Hospital Universitario Donostia Osakidetza, 20014 Donostia, Spain; (A.L.); (I.J.)
| | - Jaime Siegrist
- Gynecologic Oncology Unit, Department of Gynecology and Obstetrics, Hospital Universitario La Paz, Hospital La Paz Institute for Health Research (IdiPAZ), Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (I.Z.); (J.S.); (M.S.-P.); (A.H.)
| | - Margarita Sánchez-Pastor
- Gynecologic Oncology Unit, Department of Gynecology and Obstetrics, Hospital Universitario La Paz, Hospital La Paz Institute for Health Research (IdiPAZ), Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (I.Z.); (J.S.); (M.S.-P.); (A.H.)
| | - María Cuadra
- Department of Gynecology, Instituto de Investigación Bioaraba, OSI Araba Hospital Universitario, 01009 Vitoria-Gasteiz, Spain; (M.C.); (L.I.L.)
| | - Amaia Sagasta
- Department of Pathology, Instituto de Investigación Bioaraba, OSI Araba Hospital Universitario, 01009 Vitoria-Gasteiz, Spain; (A.S.); (I.G.)
| | - Isabel Guerra
- Department of Pathology, Instituto de Investigación Bioaraba, OSI Araba Hospital Universitario, 01009 Vitoria-Gasteiz, Spain; (A.S.); (I.G.)
| | - Luis I. Lete
- Department of Gynecology, Instituto de Investigación Bioaraba, OSI Araba Hospital Universitario, 01009 Vitoria-Gasteiz, Spain; (M.C.); (L.I.L.)
| | - Fernando Roldán
- Department of Gynecology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (F.R.); (M.J.B.)
| | - Carlo B. Marta
- Department of Pathology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (C.B.M.); (M.J.C.)
| | - María J. Boillos
- Department of Gynecology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (F.R.); (M.J.B.)
| | - María J. Cardiel
- Department of Pathology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (C.B.M.); (M.J.C.)
| | - Carlos López-de la Manzanara
- Department of Gynecology, Hospital General Universitario Ciudad Real, Universidad de Castilla-La Mancha, 13005 Ciudad Real, Spain;
| | - Fernanda Relea
- Department of Pathology, Hospital General Universitario Ciudad Real, Universidad de Castilla-La Mancha, 13005 Ciudad Real, Spain;
| | - Pluvio J. Coronado
- Women Health Institute, Hospital Clínico Universitario San Carlos, IdISSC, Complutense University, 28040 Madrid, Spain;
| | - Alejandro Pascual
- Department of Pathology, Hospital Clínico Universitario San Carlos, 28040 Madrid, Spain;
| | - María J. Román
- Department of Gynecology, Hospital General Universitario Alicante and Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain;
| | - Gloria Peiró
- Department of Pathology, Hospital General Universitario Alicante and Alicante Institute for Health and Biomedical Research (ISABIAL), 03010 Alicante, Spain;
| | - Luis J. Matute
- Department of Gynecology, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain;
| | - Beatriz Montero
- Department of Pathology, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain;
| | - Juan C. Muruzábal
- Department of Gynecology, Complejo Hospitalario Universitario Navarra, 31008 Pamplona, Spain;
| | - Rosa Guarch
- Department of Pathology, Complejo Hospitalario Universitario Navarra, 31008 Pamplona, Spain;
| | - Cristina Zorrero
- Department of Gynecology, Hospital Fundación IVO, 46009 Valencia, Spain;
| | - Ana Calatrava
- Department of Pathology, Hospital Fundación IVO, 46009 Valencia, Spain;
| | - Laia Ribot
- Department of Gynecology, Corporación Sanitaria Parc Taulí Sabadell, 08208 Barcelona, Spain;
| | - Irmgard Costa
- Department of Pathology, Corporación Sanitaria Parc Taulí Sabadell, 08208 Barcelona, Spain;
| | - Alicia Hernández
- Gynecologic Oncology Unit, Department of Gynecology and Obstetrics, Hospital Universitario La Paz, Hospital La Paz Institute for Health Research (IdiPAZ), Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (I.Z.); (J.S.); (M.S.-P.); (A.H.)
| | - David Hardisson
- Department of Pathology, Hospital Universitario La Paz, Molecular Pathology and Therapeutic Targets Group, Hospital La Paz Institute for Health Research (IdiPAZ), Center for Biomedical Research in the Cancer Network (Centro de Investigación Biomédica en Red de Cáncer, CIBERONC), Instituto de Salud Carlos III, Faculty of Medicine, Universidad Autónoma de Madrid, 28046 Madrid, Spain; (A.B.); (L.Y.)
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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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Lago V, Montero B, López S, Padilla-Iserte P, Matute L, Marina T, Gurrea M, Montoliu G, Bello P, Domingo S. Ultrastaging protocol in sentinel lymph node for apparent early stage ovarian cancer. Gynecol Oncol 2021; 161:408-413. [PMID: 33712275 DOI: 10.1016/j.ygyno.2021.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 03/01/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The objective of the present study is to determine the role of sentinel lymph node (SLN) ultrastaging in apparent early-stage ovarian cancer. METHODS We previously demonstrated the feasibility of SLN in early-stage ovarian cancer in a pilot study and in a clinical trial (NCT03452982). The SLN of the 30 patients involved in both were processed following an ultrastaging protocol. The cost of ultrastaging processing was also reported. RESULTS A SLN was detected in up to 91.3% and 90% in the pelvic and para-aortic region, respectively. In all cases, a SLN was detected at least in one field, pelvic or para-aortic. The mean time from injection to SLN resection was 53.3 ± 20.3 min. Two of 30 (6.6%) patients had a contralateral SLN in the para-aortic field, but no patients had contralateral SLN within the pelvic field after injection. The mean number of harvested SLN was 2.1 ± 1.4 (range: 0-5) and 2.7 ± 1.5 (range: 0-7) in the pelvic and para-aortic region, respectively. Two patients were upgraded to stage IIIA1 because of lymph node metastasis. In the first case, based on single sections and haematoxylin and eosin (H&E) examination, a pelvic SLN micrometastasis (1 mm) was found on the first H&E section. By using the ultrastaging protocol, the size of the metastasis was increased to 2.1 mm (macrometastasis). In the same patient, the ultrastaging study of the inframesenteric para-cava SLNs found isolated tumour cells in the subcapsular and interfollicular lymph nodes sinus in one of the two SLN harvested (in one of the sections at the fourth and fifth ultrastage levels). The other upstaged case was a para-aortic macrometastasis in a patient in whom the SLN was not identified in the para-aortic field because of the absence of migration from the infundibulo-pelvic stump injection. The cost of ultrastaging in each patient depended on the total number of SLN retrieved, averaging 96.8 € (range: 0-230.5) and 124.5 € (range: 0-322.7€) for pelvic and para-aortic SLN, respectively. CONCLUSIONS A uniform protocol for ultrastaging is essential for lower-volume metastasis detection and to provide reproducible information between upcoming studies, as evidence about SLN in ovarian cancer is growing.
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Affiliation(s)
- Víctor Lago
- Department of Gynecologic Oncology, University Hospital La Fe, Valencia, Spain; Woman's Health Research Group, Medical Research Institute La Fe (IISLAFE), Valencia, Spain; Spanish Clinical Research Network, SCReN-IIS La Fe (PT17/0017/0035), Valencia, Spain.
| | - Beatriz Montero
- Department of Pathology, University Hospital La Fe, Valencia, Spain
| | - Susana López
- Department of Pathology, University Hospital La Fe, Valencia, Spain
| | | | - Luis Matute
- Department of Gynecologic Oncology, University Hospital La Fe, Valencia, Spain
| | - Tiermes Marina
- Department of Gynecologic Oncology, University Hospital La Fe, Valencia, Spain
| | - Marta Gurrea
- Department of Gynecologic Oncology, University Hospital La Fe, Valencia, Spain
| | | | - Pilar Bello
- Department of Nuclear Medicine, University Hospital La Fe, Valencia, Spain
| | - Santiago Domingo
- Department of Gynecologic Oncology, University Hospital La Fe, Valencia, Spain
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