Minimally invasive surgery for gastro-oesophageal junction adenocarcinoma: Current evidence and future perspectives

Table 1 The search strategy summary

Items	Specification
Databases and other sources searched	PubMed Central (PMC), MEDLINE Complete (EBSCO)
Search terms used (including MeSH and free text search terms and filters)	Search strategy (see Table 2)
Timeframe	2013–2023
Inclusion and exclusion criteria (study type, language restrictions etc.)	Inclusion criteria: Meta-analyzes; trials studies; clinical trials & updates of clinical trials; reviews; original articles; only studies/papers/journals written in English Exclusion criteria: Unpublished data from abstracts contained in volumes from various congresses or conferences; papers that were not in English
Selection process (who conducted the selection, whether it was conducted independently, how consensus was obtained, etc.)	RB performed the search in the databases according to the presented criteria. If a study appears relevant by at least one reviewer - Bîrlă R and Constantin A - the full-text article has been retrieved and checked. The selection of full-text articles was made by two reviewers independently Constantin A and Bîrlă R. Assessing content validity required subjective judgment from the reviewers. The citation number was an important selection criterion. Differences were discussed and if consensus could not be reached between the two reviewers, we requested the consultation and recommendation of a third reviewer (Hoara P). The reference list from each selected article was screened for additional relevant information

Table 2 Systematic literature search for oesophagogastric junction adenocarcinoma and minimally invasive surgery

Search terms	Number of articles
1 Search: Oesophagogastric junction adenocarcinoma	2939
2 Search: (Oesophagogastric junction adenocarcinoma) AND (minimally invasive surgery)	429
3 Search: (Oesophagogastric junction adenocarcinoma) AND (minimally invasive surgery) Filters: English, from 2010-2023	230
4 Search: (Oesophagogastric junction adenocarcinoma) AND (minimally invasive surgery) Filters: English, from 2013-2023	195
Final number after review for inclusion and exclusion criteria and addition of articles from review of references1	126

¹Exclusion criteria: No abstract available; non minimally invasive surgery; gastro-oesophageal junction adenocarcinoma not a major focus of article; not published in English; case reports without on minimally invasive surgery.