What's the difference between eus trucut bx and eus fna bx? choice, likelihood of success and risk for bx extra-sigmoid soft tissue nodule?

Your doctor can expl: If you ask, your doctor will be happy to explain. Fna is a very thin needle used to do a biopsy. Trucut is a larger bore needle biopsy which yields more tissue than a fna does, so it provides a better diagnostic yiled of tumor tissue. Eus is simple a way of endoscopic ultrasound guidance from inside the intestine (colon in your case).