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. 2020 Mar;121(3):486-493.
doi: 10.1002/jso.25834. Epub 2020 Jan 9.

Impact of minimally invasive gastrectomy on use of and time to adjuvant chemotherapy for gastric adenocarcinoma

Norma E Farrow  1 , Kyle W Freischlag  2 , Mohamed A Adam  3 , Dan G Blazer  1
Affiliations

Impact of minimally invasive gastrectomy on use of and time to adjuvant chemotherapy for gastric adenocarcinoma

Norma E Farrow et al. J Surg Oncol. 2020 Mar.

Abstract

Background: Chemotherapy improves outcomes in patients with resectable gastric cancer. Minimally invasive gastrectomy (MIS) rates are increasing, though the impact of MIS on postoperative chemotherapy remains uncertain. This study examines the impact of MIS vs open gastrectomy (OG) on utilization of adjuvant chemotherapy for high-risk gastric cancer.

Methods: Patients in the National Cancer Database who underwent resection for high-risk gastric adenocarcinoma between 2010 and 2015 were included. Patients were stratified by surgical approach (MIS vs OG) and analyzed using multivariable regression modeling. Primary endpoints were utilization of and time to initiation of adjuvant chemotherapy.

Results: Overall, 23 071 patients were included; 16 595 (71.9%) underwent OG and 6476 (28.1%) underwent MIS. After adjusting for patient and tumor characteristics, MIS was not associated with increased use of adjuvant chemotherapy (odds ratio [OR]: 1.027, 95% confidence interval [CI]: 0.95 to 1.11, P = .50), and time to initiation of chemotherapy was similar (-2% change, 95% CI: -5% to +1%, P = .27). MIS was associated with shorter hospital stays (-1 day). Thirty-day readmission rates, 90-day mortality, and overall survival were similar between groups.

Conclusions: In this study, while MIS for gastric adenocarcinoma was associated with shorter hospital stays and comparable survival, it was not associated with improved utilization or time to initiation of adjuvant chemotherapy.

Keywords: adjuvant chemotherapy; gastric adenocarcinoma; gastric cancer; laparoscopic gastrectomy; minimally invasive gastrectomy.

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