This study is looking at ways to get better tissue samples from abdominal (belly area) cancers like those in the pancreas, stomach, esophagus, or liver. Doctors will compare two methods during a procedure called EUS-FNB (endoscopic ultrasound with fine needle biopsy). One method involves flushing the needle with heparin, a "blood thinner," and the other uses a salt water solution. They will also see if using a special microsieve helps. You will be randomly assigned to one of these groups. The main goal is to see which method collects more tissue. This study aims to enroll 42 participants across one location in the United States. You can join if you are at least 18 years old, not pregnant, and have a solid abdominal mass that needs to be biopsied.

Study design

This is an interventional study with 42 participants. You will be randomly assigned, like a coin flip, to receive either heparin or saline with the needle, and to have a microsieve used or not.

What's involved

You will undergo an EUS-FNB procedure where the needle will be prepared with either heparin or saline, and a microsieve may or may not be used. The aggregate specimen length will be measured immediately after the procedure.

Compensation

Not stated in the trial record.

Follow-up

The primary outcome, aggregate specimen length, is measured immediately after the procedure.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.