Association between R1 resection and oncological outcome in resectable gastrointestinal stromal tumors without tumor rupture: A systematic review and meta-analysis

被引：13

作者：

Kong, Meng ^{[1
]}

Liu, Guotao ^{[1
]}

Zhuo, Hongqing ^{[1
]}

Xin, Yingying ^{[1
]}

Chen, Hongyuan ^{[1
]}

Sheng, Hongguang ^{[1
]}

Li, Leping ^{[1
]}

机构：

[1] Shandong First Med Univ, Shandong Prov Hosp Affiliated, Dept Gastrointestinal Surg, Jinan 250021, Shandong, Peoples R China

来源：

EJSO | 2021年 / 47卷 / 07期

关键词：

Gastrointestinal stromal tumors; R1; resection; Tumor rupture; Surgical margin; Oncological outcome; Survival outcome; MICROSCOPICALLY POSITIVE MARGINS; DISEASE-FREE SURVIVAL; SURGICAL-TREATMENT; PROGNOSTIC CRITERIA; RISK-FACTORS; RECURRENCE; EXPERIENCE; SURGERY; GISTS; DEFINITION;

D O I：

10.1016/j.ejso.2021.01.032

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Background: The influence of positive microscopic margin (R1) resection on the prognosis of gastrointestinal stromal tumors (GISTs) is controversial. Tumor rupture is significantly associated with the occurrence of R1 resection and may be a confounder of R1 resection in GISTs. The present meta-analysis evaluated the real influence of R1 resection on the prognosis of GISTs by excluding the confounding effect of tumor rupture. Methods: The PubMed, Embase, Web of Science, Cochrane Central Register of Controlled Trials (CEN-TRAL), and ClinicalTrials.gov databases were searched. Studies that compared R1 with negative microscopic margin (R0) resection in GIST patients and reported the time-to-event data of recurrence-free survival (RFS) or disease-free survival (DFS) were eligible for inclusion. The quality of the observational studies was assessed using the Newcastle-Ottawa scale. Results: Of the 4896 records screened, 23 retrospective studies with 6248 participants were selected. In the overall analysis, R1 resection resulted in a significantly shorter RFS/DFS than R0 resection for GISTs (HR = 1.80, 95% CI = 1.54-2.10, P < 0.001, I-2 = 14%). However, the inferior RFS/DFS vanished when tumor rupture cases were excluded (HR = 1.34, 95% CI = 0.98-1.83, P = 0.07, I-2 = 33%). Sensitivity analysis by high-quality studies brought about a more robust HR of 1.15 (95% CI = 0.88-1.50, P = 0.29), with low heterogeneity (I-2 = 0%). The qualities of evidence for the outcomes were high. Conclusions: This meta-analysis shows that R1 resection did not influence the survival outcome of GISTs. Reresection may not be necessary when positive microscopic margins exist. This analysis could provide high-quality evidence for the development of guidelines. (C) 2021 Elsevier Ltd, BASO similar to The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.

引用

页码：1526 / 1534

页数：9

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