Long- and short-term outcomes of early gastric cancer after endoscopic resection: a retrospective study from China

Risk factors and a nomogram for predicting local recurrence in adult patients with early gastric cancer after endoscopic submucosal dissection

BACKGROUND AND AIMS

Endoscopic submucosal dissection (ESD) is an effective treatment method for early gastric cancers. The aim of this study was to evaluate the risk factors of recurrence for patients with early gastric cancer after ESD and construct a nomogram for predicting recurrence.

METHODS

A retrospective observational study was conducted on patients with early gastric cancer who underwent ESD at Beijing Friendship Hospital between 2013 and 2018. The risk factors of gastric cancer recurrence after ESD were analyzed by univariate and multivariate Cox regression.

RESULTS

A total of 238 patients with a median follow-up period of 70.5-month were enrolled in the study. Risk factors for recurrence included diabetes (HR = 3.68), alcohol consumption history (HR = 5.73), complications (HR = 5.22), lymphatic invasion (HR = 13.09) and multiple lesions (HR = 4.34). The analysis of the receiver operating characteristic curve, calibration curve, and model consistency index demonstrates that the graphical representation exhibits a good predictive capability.

CONCLUSIONS

Based on identified risk factors, this study developed the first nomogram with high accuracy to predict the recurrence of early gastric cancer after ESD. This model offers valuable guidance to clinicians for identifying high-risk patient groups and planning more intensive follow-up strategies.

Endoscopic Submucosal Dissection Criteria for Differentiated-type Early Gastric Cancer Are Applicable to Mixed-type Differentiated Predominant

BACKGROUND

There is a lack of sufficient evidence on whether mixed-type differentiated predominant early gastric cancer (MD-EGC) can be treated endoscopically by referring to the criteria for differentiated-type early gastric cancer (EGC). This study aims to evaluate the efficacy of endoscopic submucosal dissection (ESD) in MD-EGC.

METHODS

Patients with differentiated-type EGC treated with ESD first from January 2015 to June 2021 were reviewed, including MD-EGC and pure differentiated-type EGC (PD-EGC). Clinical data, including the clinicopathological characteristics, resection outcomes of ESD, and recurrence and survival time, were collected, and the difference between MD-EGC and PD-EGC was tested.

RESULTS

A total of 48 patients (48 lesions) with MD-EGC and 850 patients (890 lesions) with PD-EGC were included. Compared with PD-EGC, MD-EGC had a higher submucosal invasion rate (37.5% vs. 13.7%, P<0.001) and lymphatic invasion rate (10.4% vs. 0.4%, P<0.001). The rates of complete resection (70.8% vs. 92.5%, P<0.001) and curative resection (54.2% vs. 87.4%, P<0.001) in MD-EGC were lower than those of PD-EGC. Multivariate analysis revealed that MD-EGC (OR 4.26, 95% CI, 2.22-8.17, P<0.001) was an independent risk factor for noncurative resection. However, when curative resection was achieved, there was no significant difference in the rates of recurrence (P=0.424) between the 2 groups, whether local or metachronous recurrence. Similarly, the rates of survival(P=0.168) were no significant difference.

CONCLUSIONS

Despite the greater malignancy and lower endoscopic curative resection rate of MD-EGC, patients who met curative resection had a favorable long-term prognosis.

Efficacy of Traditional Chinese Medicine Combined with Chemotherapy in the Treatment of Gastric Cancer: A Meta-analysis

Objective. Meta-analysis was conducted to explore the effects of CM combined with chemotherapy on the effective rate and survival rate of gastric cancer patients. Methods. Literature retrieval was performed in PubMed, MEDLINE, Embase, CENTRAL, and CNKI databases. The subject of the literature was to compare the efficacy of CM combined with chemotherapy and chemotherapy alone in patients with gastric cancer. According to the Cochrane manual, the risk of bias was assessed for inclusion in randomized controlled trials. The chi-square test was used for the heterogeneity test. Subgroup analysis and sensitivity analysis were used to explore the causes of heterogeneity. Funnel chart and Egger’s test were used to assess publication bias. Results. This study included 761 patients with gastric cancer from 10 literatures. The effective rate of chemotherapy in the CM combined group was higher than that in the chemotherapy alone group (odds ratio $\left(\text{OR}\right)=1.96$ , 95% confidence interval (CI) (1.39, 2.78), $Z=3.81$ , $P=0.0001$ ), and there was no heterogeneity among studies ( $\text{ch}{\text{i}}^2=5.68$ , $P=0.68$ , $I^2=0$ %). There was no significant publication bias among all studies ( $P>0.05$ ). The one-year survival rate in the CM combined group was higher than that in the chemotherapy alone group ( $\text{OR}=3.25$ , 95% CI (1.90, 5.54), $Z=4.32$ , $P<0.0001$ ). There was no heterogeneity among studies ( $\text{ch}{\text{i}}^2=1.04$ , $P=0.79$ , $I^2=0$ %) and no significant publication bias among studies ( $P>0.05$ ). The 3-year survival rate of gastric cancer patients in the traditional Chinese medicine combination group was higher than that in the chemotherapy alone group ( $\text{OR}=1.71$ , 95% CI (1.06, 2.78), $Z=2.18$ , $P=0.03$ ). There was no heterogeneity among studies ( $\text{ch}{\text{i}}^2=2.18$ , $P=0.54$ , $I^2=0$ %), and there was no significant publication bias ( $P>0.05$ ). The incidence of nausea and vomiting after chemotherapy in gastric cancer patients in the Chinese medicine combination group was lower than that in the chemotherapy alone group ( $\text{OR}=0.47$ , 95% CI (0.34, 0.64), $Z=4.80$ , $P<0.00001$ ). There was no heterogeneity among studies ( $\text{ch}{\text{i}}^2=8.57$ , $P=0.48$ , $I^2=0$ %), and there was no significant publication bias ( $P>0.05$ ). Conclusion. CM combined with chemotherapy can improve the effective rate and survival rate of gastric cancer and reduce the incidence of nausea and vomiting after chemotherapy. We recommend a large sample size, multicenter combined randomized controlled trial for validation.