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  • Title: Splenectomy versus splenic preservation in total gastrectomy for gastric cancer: a systematic review and meta-analysis comparing survival benefits and short-term complications.
    Author: Wang D, Ren J, Wang Y, Dong X, Liu S, Liao T, Zhu L, Yu M, Cai H.
    Journal: Postgrad Med; 2024 Apr; 136(3):266-277. PubMed ID: 38567398.
    Abstract:
    BACKGROUND: There is an ongoing debate regarding the comparative merits of splenectomy (SP) and splenic preservation in the surgical management of gastric cancer. This systematic review and meta-analysis aims to shed light on potential differences in survival outcomes and postoperative complications associated with these two procedures. METHOD: An exhaustive literature search was conducted across multiple databases, namely PubMed, Embase, Cochrane Library, and Web of Science. We utilized a random-effects model via RevMan 5.4 software to conduct a meta-analysis of the hazard ratios (HRs) and risk ratios (RRs) associated with SP and spleen preservation. Subgroup analyses were based on various attributes of the included studies. We employed funnel plots to assess publication bias, and sensitivity analysis was conducted to gauge the stability of the combined results. Both funnel plots and sensitivity analysis were performed using Stata 12. RESULT: Our research incorporated 23 observational studies and three randomized controlled trials, involving a total of 6,255 patients. SP did not yield superior survival outcomes in comparison to splenic preservation, a conclusion that aligns with the combined results of the randomized controlled trials. No statistically significant difference in survival prognosis was observed between SP and splenic preservation, irrespective of whether the patients had proximal gastric cancer or proximal gastric cancer invading the stomach's greater curvature. SP exhibited a higher incidence of all postoperative complications, notably pancreatic fistula and intraabdominal abscesses. However, it did not significantly differ from splenic preservation in terms of anastomotic leakage, incision infection, intestinal obstruction, intra-abdominal bleeding, and pulmonary infection. No significant difference in postoperative mortality between SP and splenic preservation was found. Funnel plots suggested no notable publication bias, and sensitivity analysis affirmed the stability of the combined outcomes. CONCLUSION: Despite the lack of significant differences in certain individual complications and postoperative mortality, the broader pattern of our data suggests that SP is associated with a greater overall frequency of postoperative complications, without providing additional survival benefits compared to splenic preservation. Thus, the routine implementation of SP is not advocated. When doctors perform surgery for gastric (stomach) cancer, they sometimes remove the spleen, a procedure known as splenectomy (SP). However, there’s a debate on whether removing the spleen is better than preserving it. Our study aimed to compare these two methods in terms of patient survival and the risk of complications after surgery. To do this, we looked at data from 26 studies involving 6,255 patients. Our analysis was thorough, using advanced statistical methods to ensure accuracy. Here’s what we found: patients who had their spleen removed did not live longer than those who kept their spleen. Whether the cancer was just in the upper part of the stomach or had spread to the nearby large curve of the stomach, the survival rates were similar for both groups. Patients who underwent SP faced more postoperative complications, especially issues like pancreatic fistula and intra-abdominal abscesses. However, for some complications like leakage from the surgical joint, infection of the wound, bowel obstruction, internal bleeding, and lung infections, there was no significant difference between the two groups. The chances of dying post-surgery were similar whether patients had their spleen removed or not. Our findings suggest that routinely removing the spleen during gastric cancer surgery does not improve survival rates and is linked to more postoperative complications. Therefore, it may be better to avoid removing the spleen unless absolutely necessary.
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