Diagnostic value of ultrasound-guided needle biopsy in undiagnosed pleural effusions

Undiagnosed pleural effusions (UPEs) are a common problem of respiratory medicine, leading to an increased diagnostic burden globally. However, the most efficient and cost-effective approaches to UPEs remain controversial. This study aimed to assess the diagnostic value of ultrasound-guided needle biopsy (UGNB) in UPEs.We conducted a search of PubMed, Embase, the Cochrane Library and reference lists of retrieved studies with no publication data...