Peninsula Gastroenterology Medical Group, Gastroenterologists logo for print
Redwood City: 2900 Whipple Ave | Suite 245 |Redwood City, CA 94062 • Phone: 650-365-3700
Mountain View: 2500 Hospital Drive | Building 8, Suite B | Mountain View, CA 94040 • Phone: 650-964-3636

Peninsula Gastroenterology Medical Group, Gastroenterologists

650-365-3700Redwood City
650-964-3636Mountain View

Lower Endoscopic Ultrasound with Fine Needle Aspiration

PATIENT PREPARATION INSTRUCTIONS

Lower Endoscopic Ultrasound with Fine Needle Aspiration

Purpose of Procedure:

To examine tumor or polyp in greater detail by analyzing each of the 5 wall layers of rectum or colon by using a small ultrasound probe which is passed from the rectum to the area of interest. Standard colonoscopy can only visualize the first layer and miss what is hiding beneath. EUS also provides much higher resolution images than CT scans or MRI’s and better assessment of small lymph nodes outside of the intestines. Surrounding organs such as the prostate, seminal vesicles, vagina, uterus, bladder, and blood vessels can also be analyzed. Biopsies can be obtained for diagnosis.

Preparation for the Procedure:

  1. Purchase over the counter:
    1. 1 - 10 oz bottle magnesium citrate (laxative)
    2. 1 - Fleet enemas
  2. One Day Prior To Exam:
    1. Take 1/2 bottle (5oz) of citrate of magnesia (laxative) at approximately 3p.m.
    2. Eat only clear liquids for dinner
    3. DO NOT EAT OR DRINK ANYTHING EXCEPT MEDICATIONS WITH A SMALL SIP OF WATER AFTER MIDNIGHT
  3. On The Day Of Your Exam:
    1. Use the fleet enema (follow instructions on the box) first thing in the morning when you wake up (allow yourself time to get to your appointment).