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Lucas K, Melling N, Giannou AD, Reeh M, Mann O, Hackert T, Izbicki JR, Perez D, Grass JK. Lymphatic Mapping in Colon Cancer Depending on Injection Time and Tracing Agent: A Systematic Review and Meta-Analysis of Prospective Designed Studies. Cancers (Basel) 2023; 15:3196. [PMID: 37370806 PMCID: PMC10296374 DOI: 10.3390/cancers15123196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
An optimized lymph node yield leads to better survival in colon cancer, but extended lymphadenectomy is not associated with survival benefits. Lymphatic mapping shows several colon cancers feature aberrant drainage pathways inducing local recurrence when not resected. Currently, different protocols exist for lymphatic mapping procedures. This meta-analysis assessed which protocol has the best capacity to detect tumor-draining and possibly metastatic lymph nodes. A systematic review was conducted according to PRISMA guidelines, including prospective trials with in vivo tracer application. The risk of bias was evaluated using the QUADAS-2 tool. Traced lymph nodes, total resected lymph nodes, and aberrant drainage detection rate were analyzed. Fifty-eight studies met the inclusion criteria, of which 42 searched for aberrant drainage. While a preoperative tracer injection significantly increased the traced lymph node rates compared to intraoperative tracing (30.1% (15.4, 47.3) vs. 14.1% (11.9, 16.5), p = 0.03), no effect was shown for the tracer used (p = 0.740) or the application sites comparing submucosal and subserosal injection (22.9% (14.1, 33.1) vs. 14.3% (12.1, 16.8), p = 0.07). Preoperative tracer injection resulted in a significantly higher rate of detected aberrant lymph nodes compared to intraoperative injection (26.3% [95% CI 11.5, 44.0] vs. 2.5% [95% CI 0.8, 4.7], p < 0.001). Analyzing 112 individual patient datasets from eight studies revealed a significant impact on aberrant drainage detection for injection timing, favoring preoperative over intraoperative injection (OR 0.050 [95% CI 0.010-0.176], p < 0.001) while indocyanine green presented itself as the superior tracer (OR 0.127 [95% CI 0.018-0.528], p = 0.012). Optimized lymphatic mapping techniques result in significantly higher detection of aberrant lymphatic drainage patterns and thus enable a personalized approach to reducing local recurrence.
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Affiliation(s)
- Katharina Lucas
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
- Department of Visceral, Thoracic, Vascular Surgery and Angiology, City Hospital Triemli, Birmensdorferstrasse 497, 8063 Zürich, Switzerland
| | - Nathaniel Melling
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
| | - Anastasios D. Giannou
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
| | - Matthias Reeh
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
| | - Oliver Mann
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
| | - Thilo Hackert
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
| | - Jakob R. Izbicki
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
| | - Daniel Perez
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
- Department of General and Visceral Surgery, Asklepios Hospital Altona, Paul-Ehrlich-Straße 1, 22763 Hamburg, Germany
| | - Julia K. Grass
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany; (K.L.); (N.M.); (A.D.G.); (M.R.); (O.M.); (T.H.); (J.R.I.); (D.P.)
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Freitas AHA, Wainstein AJA, Nunes TA. Ex vivo sentinel lymph node investigation in colorectal cancer. JOURNAL OF COLOPROCTOLOGY 2021. [DOI: 10.1016/j.jcol.2013.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract
Introduction In Brazil, about 26,000 cases of colorectal cancer are diagnosed per year. Pa- tients considered at the early stage of disease (without lymph node) evolve with tumor relapse or recurrence in up to a quarter of cases, probably due to understaging.
Objective Research on ex vivo sentinel lymph node in patients with colorectal adenocarcinoma.
Materials and methods We studied 37 patients who underwent curative surgical resection. The marker used to identify lymph nodes was patent blue dye injected into the peritu- moral submucosa of the open surgical specimen immediately after its removal from the abdominal cavity.
Results
Ex vivo identification of sentinel lymph node with marker occurred in 13 (35.1%) patients. The sensitivity was 40% and 60% false negative. The detailed histological examina- tion of sentinel lymph nodes with multilevel section and immunohistochemistry showed metastasis in one (4.3%) individual, considered ultra-staging.
Conclusion The ex vivo identification of sentinel lymph node had questionable benefits, and worse results when include patients with rectal cancer. Restaging of one patient was possible after multilevel section and immunohistochemistry of the sentinel lymph node, but more research is needed to evaluate the role of micrometastases in patients with colorectal cancer.
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