Abstract 147P
Background
The safety and efficacy of proximal gastrectomy (PG) following for locally advanced proximal gastric cancer (LAPGC) were unclear, as oncologic outcomes of randomized trials are still pending. The aim of this study was to evaluate surgical results and long-term oncologic outcomes of PG versus total gastrectomy (TG) in treating LAGC.
Methods
A total of 2918 LAPGC patients with PG or TG were identified from the China National Cancer Center Gastric Cancer Database (NCCGCDB) 1997-2017. Propensity score matching was employed to match patients with PG or TG in a 1:1 ratio. Surgery outcomes and overall survival rates (OS) were compared between PG and TG groups after the propensity-score match. Cox proportional hazards model was used to explore the risk factors for overall survival.
Results
Of 2 918 patients, 181 (6.20%) underwent TG, while 2 737 (93.80%) underwent PG. After propensity score matching, 150 matched pairs for PG and TG were selected. Compared with TG group, PG group had shorter operative time (181.8±49.8min vs. 213.5±66.7min, P < 0.001) and less estimated blood transfusion (743.8±296.6ml vs. 978.4±421.1ml, P = 0.005). More lymph nodes (34.3±17.0 vs. 24.2±11.0, P < 0.001) were retrieved in TG group than in PG group. The 3- and 5-year OS rates (79.1% vs. 77.2% and 74.5% vs. 72.0%, respectively, both P < 0.001) in PG group were slightly higher than ones in TG group. However, the multivariable results showed that there was no significant difference in the OS status between the groups (HR = 1.17, 95% CI:0.92-1.50, P = 0.21), even stratified into stage II and III.
Conclusions
In conclusion, the extent of resection for LAPGC patients did not influence the long-term survival outcomes. Moreover, future randomized clinical trials of quality of life following PG or TG are expected to assist surgeons in choice of surgical approach and strategy for LAPGC patients.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
The authors.
Funding
National Key R&D Program of China (Grant No.2017YFC0908300).
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
4P - Impact of chemotherapy and radiotherapy on tissue expander or implant removal in breast cancer patients
Presenter: Sungmi Jung
Session: Poster display session
Resources:
Abstract
5P - Long-term prognostic effect of hormone receptor subtype on breast cancer
Presenter: Ki-tae Hwang
Session: Poster display session
Resources:
Abstract
6P - Effect of apparent diffusion coefficient in predicting pathologic responses in patients with breast cancer treated with neoadjuvant chemotherapy using nanoparticle albumin-bound paclitaxel
Presenter: Yutaka Mizuno
Session: Poster display session
Resources:
Abstract
7P - Current diagnostic strategy for mammographic microcalcification without specific ultrasound abnormality
Presenter: Naoki Sato
Session: Poster display session
Resources:
Abstract
8P - Comparison of standard uptake value of 18F-FDG-PET-CT with tumour-infiltrating lymphocytes in breast cancer ≥1cm
Presenter: Soeun Park
Session: Poster display session
Resources:
Abstract
10P - Prognosis and effect of adjuvant treatment in small, node(-), HER2(+) breast cancer
Presenter: Seungtaek Lim
Session: Poster display session
Resources:
Abstract
11P - The prognosis of rare histopathologic subtype of breast cancer
Presenter: Soo Youn Bae
Session: Poster display session
Resources:
Abstract
12P - Daily collection of physical activity via smartphone application and smart band for development of distress screening tools in breast cancer survivors: A feasibility study
Presenter: Yungil Shin
Session: Poster display session
Resources:
Abstract
13P - Breast cancer distribution in East Azerbaijan, Iran: Results of population-based cancer registry
Presenter: Shima Pashaei
Session: Poster display session
Resources:
Abstract
14P - Validation of the optimum timing of assessment of tumour infiltrating lymphocytes during preoperative chemotherapy for breast cancer
Presenter: Shinichiro Kashiwagi
Session: Poster display session
Resources:
Abstract