Endoscopic Ultrasound (EUS)
A short guide for patients at Valley Gastroenterology
What is EUS?
EUS combines an endoscope with a high‑resolution ultrasound probe to capture detailed images of the esophagus, stomach, duodenum, pancreas, bile duct, and nearby lymph nodes. When needed, we can perform needle biopsies (FNA/FNB) through the scope for diagnosis and staging.
Why it’s done
  • Evaluate pancreatic masses/cysts, chronic or acute pancreatitis
  • Assess bile duct or gallbladder abnormalities and unexplained jaundice
  • Investigate subepithelial (under-the-lining) GI lesions found on prior scopes or imaging
  • Stage known cancers (esophageal, gastric, pancreatic, rectal) and sample lymph nodes
  • Therapeutic options in select cases: celiac plexus block, cyst drainage, or targeted injections
How to prepare
  • Fasting: Nothing to eat or drink after midnight unless we instruct otherwise.
  • Medications: Tell us about blood thinners, antiplatelets, diabetes meds, and GLP‑1s—we’ll give a tailored plan. Do not stop any medication without our guidance.
  • Driver required after sedation.
  • Antibiotics may be prescribed if a cyst or fluid collection is sampled/drained.
What to expect (day of)
  1. Check‑in & nursing assessment (15–30 min)
  1. Sedation for comfort
  1. Procedure 30–60 minutes; longer if biopsies or therapy are needed
  1. Recovery 30–60 minutes with a written summary
Mild sore throat and bloating are common and usually resolve within 24 hours.
Risks (uncommon)
Bleeding or infection (higher with biopsy/drainage), pancreatitis (rare), perforation, aspiration, reactions to sedation, or missed lesions. We review your individual risks and obtain informed consent before the procedure.
After you go home
  • Start with light foods and fluids; avoid alcohol for 24 hours
  • Expect minor throat discomfort; lozenges help
  • Call us urgently for severe abdominal pain, fever >101°F, persistent vomiting, chest pain, shortness of breath, or black/tarry stools
Results & follow‑up
  • We share preliminary findings before you leave
  • Pathology results (if biopsies) typically return in 7–14 days via phone or portal
  • Next steps depend on results and may involve surveillance, imaging, or surgical/oncology consultation
Alaska‑specific travel note
We monitor Mat‑Su weather and road conditions. If travel is unsafe, we’ll reschedule without penalty and prioritize your next available slot.
Valley Gastroenterology
3190 E Meridian Park Loop, Suite 206
Wasilla, Alaska 99654
Phone: (907) 373-2544
Fax: (844) 689-4240
Web: ValleyGastroAK.com