Diagnostic efficacy of endoscopic ultrasound-guided liver biopsy for diffuse liver diseases and its predictors - a multicentric retrospective analysis

Lymphangiosis Carcinomatosa of the Liver and Extrahepatic Bile Duct Due to Gastric Cancer: A Case Report and Literature Review

A 78-year-old man was diagnosed with advanced poorly differentiated gastric adenocarcinoma, presenting with jaundice and diffuse thickening of the extrahepatic bile duct. No obstructive biliary sites or liver masses were observed. The serum concentrations of proteins induced by the absence of vitamin K or antagonist-II were markedly high. Samples of the extrahepatic bile duct and liver were obtained by endoscopic examination. The patient was diagnosed with lymphangiosis carcinomatosa of the liver and extrahepatic bile duct but died 28 days after hospitalization. As the disease progresses rapidly with uncharacteristic imaging findings, biopsy samples should be obtained early using several diagnostic tools.

Endoscopic ultrasound-guided versus percutaneous liver biopsy: a systematic review and meta-analysis of randomized controlled trials

BACKGROUND

Percutaneous liver biopsy (PC-LB) has long been the usual method for acquisition of liver tissue. Recently, endoscopic ultrasound-guided liver biopsy (EUS-LB) has gained popularity as an alternative modality. We aimed to compare the efficacy and safety of EUS-LB versus PC-LB.

METHODS

We systematically searched PubMed, Embase, and the Cochrane Library databases for randomized controlled trials (RCTs) comparing EUS-LB with PC-LB published until October 20, 2023. The primary outcome was diagnostic adequacy. Secondary outcomes were: the number of complete portal tracts (CPTs), longest sample length (LSL), total sample length (TSL), post-procedure pain scores, and adverse events (AEs), including overall AEs and AEs excluding minor post-procedure symptoms. We compared binary outcomes using risk ratios (RRs) and continuous outcomes using the mean difference (MD) or standardized mean difference (SMD), with 95%CIs.

RESULTS

Four RCTs (258 patients) were included. The EUS-LB group presented lower post-procedure pain scores (SMD -0.58, 95%CI -0.95 to -0.22) than the PC-LB group. Both groups performed similarly in terms of diagnostic adequacy (RR 1.0, 95%CI 0.96 to 1.04), number of CPTs (MD 2.57, 95%CI -4.09 to 9.22), LSL (MD -2.91 mm, 95%CI -5.86 to 0.03), TSL (MD 4.16 mm, 95%CI -10.12 to 18.45), overall AEs (RR 0.54, 95%CI 0.20 to 1.46), and AEs excluding minor post-procedure symptoms (RR 1.65, 95%CI 0.21 to 13.02).

CONCLUSIONS

This meta-analysis suggests that EUS-LB is as safe and effective as PC-LB and is associated with lower post-procedure pain scores.Registration on PROSPERO: CRD42023469469.

Diagnostic Yield of Endoscopic Ultrasound-Guided Liver Biopsy in Comparison to Percutaneous Liver Biopsy: A Meta-Analysis of Randomized Controlled Trials and Trial Sequential Analysis

BACKGROUND

The efficacy of endoscopic ultrasound-guided liver biopsy (EUS-LB) compared to percutaneous liver biopsy (PC-LB) remains uncertain.

METHODS

Our data consist of randomized controlled trials (RCTs) comparing EUS-LB to PC-LB, found through a literature search via PubMed/Medline and Embase. The primary outcome was sample adequacy, whereas secondary outcomes were longest and total lengths of tissue specimens, diagnostic accuracy, and number of complete portal tracts (CPTs).

RESULTS

Sample adequacy did not significantly differ between EUS-LB and PC-LB (risk ratio [RR] 1.18; 95% confidence interval [CI] 0.58-2.38; p = 0.65), with very low evidence quality and inadequate sample size as per trial sequential analysis (TSA). The two techniques were equivalent with respect to diagnostic accuracy (RR: 1; CI: 0.95-1.05; p = 0.88), mean number of complete portal tracts (mean difference: 2.29, -4.08 to 8.66; p = 0.48), and total specimen length (mean difference: -0.51, -20.92 to 19.9; p = 0.96). The mean maximum specimen length was significantly longer in the PC-LB group (mean difference: -3.11, -5.51 to -0.71; p = 0.01), and TSA showed that the required information size was reached.

CONCLUSION

EUS-LB and PC-LB are comparable in terms of diagnostic performance although PC-LB provides longer non-fragmented specimens.

Comparison of Diagnostic Accuracy and Diagnostic Adequacy Between Endoscopic Ultrasound-Guided and Percutaneous Liver Biopsies: A Meta-Analysis of Randomized Controlled Trials and Observational Studies

A liver biopsy (LB) is a crucial diagnostic tool for evaluating liver diseases and is traditionally performed percutaneously under ultrasound guidance (PC-LB). However, endoscopic ultrasound-guided liver biopsy (EUS-LB) has emerged as an alternative approach, offering potential advantages over conventional techniques. This systematic review and meta-analysis aimed to compare the effectiveness and safety of EUS-LB using modern core biopsy needles with PC-LB. A comprehensive literature search identified nine studies involving 785 patients that met the inclusion criteria. The meta-analysis evaluated three primary endpoints: diagnostic adequacy, diagnostic accuracy, and adverse event rates. The results indicated no significant difference in overall diagnostic adequacy (odds ratio: 0.446, 95% CI: 0.192-1.031) or diagnostic accuracy (odds ratio: 1.646, 95% CI: 0.224-12.09) between EUS-LB and PC-LB. Furthermore, the combined occurrence of adverse events did not differ significantly between the two procedures (odds ratio: 0.653, 95% CI: 0.298-1.431). However, PC-LB demonstrated superiority in obtaining a higher number of complete portal tracts (mean difference: -0.985, 95% CI: -1.753 to -0.218), indicating better specimen quality. While both EUS-LB and PC-LB exhibited similar diagnostic performance and safety profiles, PC-LB provided higher-quality specimens, which may be advantageous in cases where accurate diagnosis and staging are critical, such as the evaluation of liver fibrosis. Clinicians should consider factors like specimen quality, procedural preferences, and local expertise when selecting the appropriate biopsy approach tailored to individual patient needs and clinical circumstances.

Diagnostic and therapeutic role of endoscopic ultrasound in liver diseases: A systematic review and meta-analysis

BACKGROUND

In hepatology, the clinical use of endoscopic ultrasound (EUS) has experienced a notable increase in recent times. These applications range from the diagnosis to the treatment of various liver diseases. Therefore, this systematic review summarizes the evidence for the diagnostic and therapeutic roles of EUS in liver diseases.

AIM

To examine and summarize the current available evidence of the possible roles of the EUS in making a suitable diagnosis in liver diseases as well as the therapeutic accuracy and efficacy.

METHODS

PubMed, Medline, Cochrane Library, Web of Science, and Google Scholar databases were extensively searched until October 2023. The methodological quality of the eligible articles was assessed using the Newcastle-Ottawa scale or Cochrane Risk of Bias tool. In addition, statistical analyses were performed using the Comprehensive Meta-Analysis software.

RESULTS

Overall, 45 articles on EUS were included (28 on diagnostic role and 17 on therapeutic role). Pooled analysis demonstrated that EUS diagnostic tests had an accuracy of 92.4% for focal liver lesions (FLL) and 96.6% for parenchymal liver diseases. EUS-guided liver biopsies with either fine needle aspiration or fine needle biopsy had low complication rates when sampling FLL and parenchymal liver diseases (3.1% and 8.7%, respectively). Analysis of data from four studies showed that EUS-guided liver abscess had high clinical (90.7%) and technical success (90.7%) without significant complications. Similarly, EUS-guided interventions for the treatment of gastric varices (GV) have high technical success (98%) and GV obliteration rate (84%) with few complications (15%) and rebleeding events (17%).

CONCLUSION

EUS in liver diseases is a promising technique with the potential to be considered a first-line therapeutic and diagnostic option in selected cases.