Information sources
The systematic literature search was performed in the PubMed, Embase,
Scopus and Cochrane library, which was conducted by two investigators
independently by using medical subject headings and search terms:
‘Cystic Adenomatoid Malformation of Lung, Congenital’, ‘Asymptomatic
Diseases’ and ‘Surgical Procedures, Operative’. A combination of MeSH
words and Entry terms was used in our search. Other potential studies
were identified through manual searching of the eligible studies. Two
researchers independently reviewed the publications and studies and
selected the articles identified with specific inclusion criteria
presented. Disagreement was resolved by consensus involving a third
reviewer. To improve the transparency, accuracy and completeness, this
meta-analysis is written and conducted in accordance with the guidelines
from the Preferred Reporting Items for Systematic Reviews and
Meta-Analyses(PRISMA) guidelines for conducting and reporting systematic
reviews.