Diagnostic Accuracy of SurePath™ in EUS-FNA

A Prospective Comparison of SurePath™ Liquid -Based Cytology and Conventional Smear Cytology in Endoscopic Ultrasound-guided Sampling of Esophageal, Gastric, Duodenal Subepithelial Tumors, Periesophageal and Perigastric Lymph Nodes

It is a prospective randomized controlled study to evaluate the diagnostic accuracy of SurePath™ liquid-based cytology in endoscopic ultrasound-guided sampling.

The SurePath™ has been approved by the FDA since 1997. Investigators want to compare the diagnostic accuracy of SurePath™ liquid based cytology and conventional smear cytology(CSC) in EUS-FNA sampling of esophageal, gastric, duodenal subepithelial tumors, periesophageal and perigastric lymph nodes.

The investigators randomly assigned (1:1) patients to the SurePath™ group or the CSC group. Aspirates from the first needle pass were processed by one method, aspirates from the second pass by the other method, and specimens from the last pass were processed as core biopsy samples. The primary endpoint was the diagnostic efficacy of each method, with the final diagnosis as the gold standard. The aim of this study is to confirm that the SurePath™ is not inferior than the conventional smear test.

Inclusion Criteria:

• Patients who signed the agreement after the explanation
• Patients suspected of esophageal, gastric, duodenal subepithelial tumors, periesophageal and perigastric lymph nodes from radiological(CT, MR, ultrasound) or endoscopic examinations.

Exclusion Criteria:

• Those who did not agree with the study
• Patients younger than 19 years of age
• Serious mental patients
• Patients with severe accompanying diseases (ESRD, advanced COPD, severe heart failure, sever mental illness)
• Pregnant women
• If EUS is difficult due to previous surgery (Billroth II or TG with R-en-Y)
• Patient with blood clotting abnormality
• If there is a risk of tract seeding after examination