Background
Remnant gastric cancer (RGC) is an uncommon form of gastric cancer. The aim of this study was to investigate factors influencing the prognosis of patients with RGC.
Methods
A total of 49 patients diagnosed with RGC and 214 patients with primary upper third gastric cancer (PUGC) at our institution between January 1990 and December 2014 were included. The clinicopathological characteristics, prognosis, and factors influencing prognosis were compared.
Results
The body mass index (BMI) of RGC was significantly lower than that for PUGC (
P < 0.0001). Multivariate analysis revealed that BMI and the depth of tumor invasion were independent prognostic factors in RGC. ROC analysis indicated that an optimal cut-off value for BMI was 20.6. Based on this value, patients were divided into two groups: BMI
High (≥ 20.6) and BMI
Low (< 20.6). The 5-year survival rates of patients with BMI
High early gastric cancer, BMI
High advanced gastric cancer, BMI
Low early gastric cancer, and BMI
Low advanced gastric cancer were 90%, 83.3%, 64.3% and 33.8%, respectively, and the difference was statistically significant (
P = 0.00023).
Conclusion
Our retrospective study indicated a poor prognosis of RGC compared with PUGC, and that BMI could predict the prognosis of RGC. The prognosis of patients with BMI
Low advanced RGC was extremely poor.
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