Abstract
Background
The use of sentinel lymph node biopsy in patients with T1 melanoma ≤ 1 mm has not been reported in a prospective clinical trial setting, so these clinical outcomes remain understudied. This study seeks to evaluate overall survival (OS) with and without lymph node biopsy (LNB) in patients with clinical T1N0M0 melanoma (0.5–1.0 mm).
Patients and Methods
Patients were identified using the National Cancer Data Base (2004–2012). After stratification into 0.5–0.7-mm and 0.8–1.0-mm groups, patients undergoing LNB were propensity score-matched 1:1 to patients not undergoing LNB. OS was compared using the Kaplan–Meier method and the stratified log-rank test.
Results
Resection was performed in 28,846 patients, and LNB in 14,028 (49%); 15,194 were included in propensity score-matched analysis. The LNB and no-LNB groups were well balanced on all studied covariates (standardized mean difference < 0.10). Among patients with tumors 0.5–0.7 mm, 5- and 10-year OS were 94.7% and 82.7%, respectively, for the LNB group compared with 94.3% and 84.4% for the no-LNB group (p = 0.35). Among patients with tumors 0.8–1.0 mm in thickness, 5- and 10-year OS were 93.9% and 81.6%, respectively, for the LNB group compared with 90.3% and 74.3% for the no-LNB group (p < 0.0001).
Conclusions
There was no difference in OS by LNB status in patients with lesions 0.5–0.7 mm, consistently with recommendations against its routine use in this group. In lesions 0.8–1.0 mm, receipt of LNB was associated with a clinically small but significant improvement in OS. Further study is warranted to better understand this outcome difference.
Similar content being viewed by others
References
Morton DL, Thompson JF, Cochran AJ, et al. Final trial report of sentinel-node biopsy versus nodal observation in melanoma. N Engl J Med. 2014;370(7):599–609.
Wong SL, Faries MB, Kennedy EB, et al. Sentinel lymph node biopsy and management of regional lymph nodes in melanoma: American Society of Clinical Oncology and Society of Surgical Oncology clinical practice guideline update. Ann Surg Oncol. 2018;25(2):356–77.
Wong SL, Faries MB, Kennedy EB, et al. Sentinel lymph node biopsy and management of regional lymph nodes in melanoma: American Society of Clinical Oncology and Society of Surgical Oncology clinical practice guideline update. J Clin Oncol. 2018;36(4):399–413.
Coit DG, Andtbacka R, Anker CJ, et al. Melanoma, version 2.2013: featured updates to the NCCN guidelines. J Natl Compr Canc Netw. 2013;11(4):395–407.
Coit DG, Andtbacka R, Bichakjian CK, et al. Melanoma. J Natl Compr Canc Netw. 2009;7(3):250–75.
Cormier JN, Xing Y, Ding M, et al. Population-based assessment of surgical treatment trends for patients with melanoma in the era of sentinel lymph node biopsy. J Clin Oncol. 2005;23(25):6054–62.
Houghton A, Coit D, Bloomer W, et al. NCCN melanoma practice guidelines. National Comprehensive Cancer Network. Oncology (Williston Park). 1998;12(7A):153–77.
Gershenwald JE, Scolyer RA, Hess KR, et al. Melanoma staging: evidence-based changes in the American Joint Committee on Cancer eighth edition cancer staging manual. CA Cancer J Clin. 2017;67(6):472–92.
Austin PC. The use of propensity score methods with survival or time-to-event outcomes: reporting measures of effect similar to those used in randomized experiments. Stat Med. 2014;33(7):1242–58.
VanderWeele TJ, Ding P. Sensitivity analysis in observational research: introducing the e-value. Ann Intern Med. 2017;167(4):268–74.
Sperry SM, Charlton ME, Pagedar NA. Association of sentinel lymph node biopsy with survival for head and neck melanoma: survival analysis using the SEER database. JAMA Otolaryngol Head Neck Surg. 2014;140(12):1101–9.
Murtha TD, Han G, Han D. Predictors for use of sentinel node biopsy and the association with improved survival in melanoma patients who have nodal staging. Ann Surg Oncol. 2018;25(4):903–11.
Boffa DJ, Rosen JE, Mallin K, et al. Using the National Cancer Database for outcomes research: a review. JAMA Oncol. 2017;3(12):1722–8.
Cordeiro E, Gervais MK, Shah PS, Look Hong NJ, Wright FC. Sentinel lymph node biopsy in thin cutaneous melanoma: a systematic review and meta-analysis. Ann Surg Oncol. 2016;23(13):4178–88.
Balch CM, Gershenwald JE, Soong SJ, et al. Final version of 2009 AJCC melanoma staging and classification. J Clin Oncol. 2009;27(36):6199–206.
Funding
P.A. Gimotty was supported in part by a grant from the National Cancer Institute, Specialized Programs of Research Excellence (SPORE), P50-CA174523. This study was reviewed and approved by the Institutional Review Board at the University of Pennsylvania (Protocol 828019).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Disclosure
There are no financial conflicts to disclose.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Sinnamon, A.J., Gimotty, P.A., Karakousis, G.C. et al. Survival Outcomes Following Lymph Node Biopsy in Thin Melanoma—A Propensity-Matched Analysis. Ann Surg Oncol 28, 1634–1641 (2021). https://doi.org/10.1245/s10434-020-08997-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1245/s10434-020-08997-3