TY - JOUR
T1 - Lymph node yield, depth of invasion, and survival in node-negative oral cavity cancer
AU - Zenga, Joseph
AU - Divi, Vasu
AU - Stadler, Michael
AU - Massey, Becky
AU - Campbell, Bruce
AU - Shukla, Monica
AU - Awan, Musaddiq
AU - Schultz, Christopher J.
AU - Shreenivas, Aditya
AU - Wong, Stuart
AU - Jackson, Ryan S.
AU - Pipkorn, Patrick
N1 - Funding Information:
The data used in this study are derived from a de-identified NCDB file. The American College of Surgeons and The Commission on Cancer have not verified and are not responsible for the analytic or statistical methodology employed, or the conclusions drawn from these data by the investigator.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/11
Y1 - 2019/11
N2 - Objective: To determine the effects of nodal yield on survival in early stage oral cavity squamous cell carcinoma (OCSCC) in the context of primary tumor depth of invasion (DOI). Materials and methods: Patients with early-stage clinically node-negative OCSCC who underwent upfront surgery at the primary site were identified using the National Cancer Database between 2004 and 2015. Results: There were 3384 patients with <4 mm DOI and 1387 patients with ≥4 mm DOI identified. Management of the neck included observation (40%), END with <18 nodes harvested ± postoperative radiation (ND < 18, 16%), and END with ≥18 nodes harvest ± postoperative radiation (ND ≥ 18, 44%). When adjusted for relevant covariates, ND ≥ 18 demonstrated statistically significant improvements in overall survival for both DOI < 4 mm and ≥4 mm (DOI < 4 mm: HR 0.67, 95%CI 0.54–0.85; DOI ≥ 4 mm: HR 0.47, 95%CI 0.34–0.64). However, ND < 18 showed no significant difference from observation of the neck regardless of DOI (DOI < 4 mm: HR 0.82, 95%CI 0.63–1.07; DOI ≥ 4 mm: HR 0.72, 95%CI 0.51–1.03). Of patients undergoing END, the most significant factors associated with obtaining a nodal yield of 18 or more were age less than 40 years (HR 2.58, 95%CI 1.84–3.63) and treatment at an academic facility (HR 2.47, 95%CI 2.06–2.96). Conclusions: END with 18 or more nodes is associated with improved survival outcomes in patients with early stage OCSCC regardless of DOI. END with less than 18 nodes, however, does not appear significantly different than observation of the neck alone. Achieving a lymph node yield of 18 or more is multifactorial and includes both patient and provider factors.
AB - Objective: To determine the effects of nodal yield on survival in early stage oral cavity squamous cell carcinoma (OCSCC) in the context of primary tumor depth of invasion (DOI). Materials and methods: Patients with early-stage clinically node-negative OCSCC who underwent upfront surgery at the primary site were identified using the National Cancer Database between 2004 and 2015. Results: There were 3384 patients with <4 mm DOI and 1387 patients with ≥4 mm DOI identified. Management of the neck included observation (40%), END with <18 nodes harvested ± postoperative radiation (ND < 18, 16%), and END with ≥18 nodes harvest ± postoperative radiation (ND ≥ 18, 44%). When adjusted for relevant covariates, ND ≥ 18 demonstrated statistically significant improvements in overall survival for both DOI < 4 mm and ≥4 mm (DOI < 4 mm: HR 0.67, 95%CI 0.54–0.85; DOI ≥ 4 mm: HR 0.47, 95%CI 0.34–0.64). However, ND < 18 showed no significant difference from observation of the neck regardless of DOI (DOI < 4 mm: HR 0.82, 95%CI 0.63–1.07; DOI ≥ 4 mm: HR 0.72, 95%CI 0.51–1.03). Of patients undergoing END, the most significant factors associated with obtaining a nodal yield of 18 or more were age less than 40 years (HR 2.58, 95%CI 1.84–3.63) and treatment at an academic facility (HR 2.47, 95%CI 2.06–2.96). Conclusions: END with 18 or more nodes is associated with improved survival outcomes in patients with early stage OCSCC regardless of DOI. END with less than 18 nodes, however, does not appear significantly different than observation of the neck alone. Achieving a lymph node yield of 18 or more is multifactorial and includes both patient and provider factors.
KW - Depth of invasion
KW - Lymph node yield
KW - Neck dissection
KW - Oral cancer
KW - Squamous cell carcinoma
UR - http://www.scopus.com/inward/record.url?scp=85072773115&partnerID=8YFLogxK
U2 - 10.1016/j.oraloncology.2019.09.028
DO - 10.1016/j.oraloncology.2019.09.028
M3 - Article
C2 - 31586894
AN - SCOPUS:85072773115
SN - 1368-8375
VL - 98
SP - 125
EP - 131
JO - Oral Oncology
JF - Oral Oncology
ER -