Prophylactic Antibiotics Do Not Prevent Infectious Complications of Endoscopic Ultrasound Fine-Needle Aspiration of Pancreatic Cysts: A Systematic Review and Meta-Analysis

III BRAZILIAN CONSENSUS STATEMENT ON ENDOSCOPIC ULTRASOUND

BACKGROUND

•Since its inception in the 1980s, endoscopic ultrasound has increased relevance and usefulness in clinical practice.

BACKGROUND

•Endoscopic ultrasound has evolved from solely diagnostic imaging to a valuable method for tissue sampling and therapeutic procedures, such as drainage of pancreatic fluid collections and creating gastrointestinal anastomoses under EUS guidance.

BACKGROUND

•Given the rapid advancements in EUS and new devices, an update to the last Consensus must include recent developments.

BACKGROUND

•Experts evaluated and discussed the best evidence on EUS-guided procedures and devices for tissue sampling, pancreatic and liver disease management, and biliary drainage.

BACKGROUND

In the past decades, endoscopic ultrasound has developed from a diagnostic tool to a platform for many therapeutic interventions. Various technological advancements have emerged since the last Brazilian Consensus, demanding a review and update of the recommendations based on the best scientific evidence.

METHODS

A group of 32 renowned echoendoscopists selected eight relevant topics to be discussed to generate clinical questions. After that, a literature review was conducted to answer these questions based on the most updated evidence.

RESULTS

Thirty-three statements were formulated and voted on by the experts to reach a consensus. The Oxford System was used to grade the level of evidence.

CONCLUSION

There is mo-derate evidence to support that the needle shape, gauge, or aspiration technique does not influence the yield of endoscopic ultrasound (EUS)-guided tissue sampling of pancreatic solid lesions. There is moderate evidence to support using EUS-TTNB of the cyst wall to differentiate between mucinous and non-mucinous cystic neoplasms. There is little evidence to support the EUS-guided treatment of gastric varices. There is a high level of evidence to support that EUS-guided biliary drainage and ERCP present similar outcomes in patients with distal malignant biliary obstruction. There is a high level of evidence for using EUS to diagnose neoplastic pancreatic cysts and detect necrosis before indicating drainage. There is moderate evidence to support EUS-GE over duodenal stent for malignant gastric outlet obstruction in patients with a life expectancy higher than 2 months. There is a high level of evidence to support the use of RFA in treating both functioning and non-functioning types of NET.

The clinical impact of endoscopic ultrasound-guided fine-needle aspiration on the patients with low-risk pancreatic cystic lesions

Background and aims

Endoscopic ultrasound (EUS) is playing a more and more important role in the management of pancreatic cystic lesion (PCLs). The aim of our study was to evaluate the clinical impact of EUS and EUS guided fine needle aspiration (FNA) on patients with low-risk PCLs.

Materials and methods

Low-risk PCL patients who underwent EUS-FNA in 2 edoscopic centers were retrospectively collected and analyzed. The clinical impact of EUS-FNA on these patients was analyzed and the predictors for significance EUS-FNA (defined by diagnosis and treatment method change, new high-risk feature identified after imaging scans) were analyzed by logistic regression analyses.

Results

From July 2004 to February 2017, 186 patients with low-risk PCLs were included. The study cohort had a mean age of 52.4 ± 15.9 years (range: 19-86 years) with 89 (47.8%) male patients included. The clinical significance of EUS-FNAs was observed in 74 patients (39.8%). The presumed diagnoses of PCLs by imaging were changed in 51 (51/74, 68.9%) patients. Nineteen (19/74, 25.7%) new high-risk features were identified by EUS-FNA, and four patients (4/74, 5.4%) underwent surgery due to suspicious or malignant cytology. Based on multivariate analysis, large cyst size [odds ratio (OR): 1.12, 95% confidence interval (CI): 1.02–1.19, P = 0.033], young age (OR: 0.94, 95% CI: 0.91–0.99, P = 0.041) and BMI over 25 (OR: 3.15, 95% CI: 1.29–7.86, P = 0.013) were independent predictors of clinical significance for EUS-FNA. The optimal age and cyst size to predict significance EUS-FNA was 46.0 years and 2.3cm.

Conclusions

On the basis of a 2-center retrospective study, EUS-FNA was clinically significant in about 40% of low-risk PCLs, especially in young, large cyst size, and overweight patients.