Endoscopic Ultrasonography (EUS)

in Northern Colorado

Schedule An Appoinment

Many conditions that cause patients pain or discomfort are rooted in issues with internal organs that may be difficult to examine with more traditional diagnostic procedures. However, advancing technology has given us new and improved ways to notice and treat abnormalities. Endoscopic Ultrasonography, or EUS, is used to produce high-quality images of the digestive tract as well as the organs that surround it, including the liver, gallbladder, lungs, and lymph nodes. This minimally invasive procedure is designed to diagnose conditions involving these internal organs, allowing a member of our expert team to work with you in determining a plan of treatment.

What is Endoscopic Ultrasonography (EUS)?

EUS makes use of a very thin, flexible tube-like structure–also known as an endoscope–as well as an ultrasound, or a device designed to produce sound waves in order to receive detailed images. In some cases, the endoscope may also include a tiny needle that can be utilized to procure tissue samples from the area being examined (EUS-guided fine-needle biopsy). This device may be used, in addition, to inject a drug or drain excess fluid from the site of a lesion.

An EUS tube may be inserted in the throat or through the anus, depending on the area that needs to be analyzed. Organs like the stomach and the small intestine can be examined with the endoscope being inserted through the throat, while the colon, rectum, and lymph nodes can be examined with the endoscope being inserted through the anus.

There are several reasons that a member of our team may suggest that an EUS be performed. It can assess several abnormalities, including damaged tissues, lesions, and cysts. It can also be an effective diagnostic tool for cancer. It is a generally safe, minimally invasive process that can help determine what issue might be causing discomfort.

Endoscopic Ultrasonography (EUS) Procedure

EUS is a procedure that is regularly performed by our expert team. Our team members are specially trained to administer this diagnostic test efficiently and effectively. Before the procedure takes place, a team member will discuss your medical history, as well as what you can expect from the procedure.


Before the procedure begins, you will need to refrain from consuming food or liquids for several hours to ensure the most accurate, high-quality results. Depending on where the endoscope is being inserted, you may be instructed to take a laxative or a solution to clean the colon.


Anesthesia is commonly administered for this procedure, so you will typically be unconscious during the process. The endoscope will be inserted either through the anus or through the throat. The ultrasound transducer attached to the endoscope will produce images that will be analyzed by your physician. The procedure can typically be completed within an hour.


Endoscopic Ultrasonography (EUS) Recovery and Aftercare

If you were administered anesthesia for your EUS procedure, you should arrange for someone to drive you home. Normal activity may typically be resumed shortly after the procedure has finished. Patients should be able to return home on the day of the procedure.

Patients may experience discomfort or soreness in the throat after the procedure, which can typically be treated using lozenges. The images or removed tissue will be analyzed, and the results will be discussed with you in order to design a treatment plan.


Next Steps

Schedule Appointment

Contact Us Today to Schedule Your Endoscopic Ultrasonography

If you’re concerned about symptoms you or a loved one may be experiencing, Centers for Gastroenterology would love to work with you to develop a plan of treatment. Contact us today to schedule an appointment for a consultation with one of our experienced physicians.



“The experience of getting an infusion is not the greatest thing you want in your life. The staff are very efficient and professional while also being very relaxed and friendly. Telling stories and joking with multiple patients at once keeps it interesting and feeling very personable.” – Gerry Granahan

“Great job! I enjoyed my time there. They make everything so easy and comfortable for me always willing to accommodate me.” – Teresa Murdock

“The Infusion Nurses are amazing people and technicians! Always friendly and professional! Thank you Jessica and Nathan for your excellent service. And thank you Brenda in scheduling for always finding a way to make appointments work out for me!!!” – Laurie Cover

“I have been going to this practice for 18 years. I know I wouldn’t be here to write this review if it weren’t for Dr. Dunphy. She is an amazing doctor as well as an amazing woman. Absolutely the best in her field. I don’t know what I’d do without her.” -Stacey K.