An endoscopic ultrasound (EUS) is like an endoscopy, but the endoscope has an ultrasound probe on the tip. The probe uses sound waves to make pictures of organs in the body.
It is usually used to measure the cancer and to see if it has spread (staging). This includes looking at nearby lymph nodes, and taking tissue samples (biopsies) if needed. It can also be used to help diagnose some types of cancer.
Your doctor or nurse will explain what an endoscopic ultrasound is and what to expect. They will tell you if you need to do anything beforehand. For example, if you should not eat or drink for a period of time before the procedure.
The doctor will give you a sedative to help you relax. They also spray a local anaesthetic on to the back of your throat to numb it.
The ultrasound also helps guide the specialist doctor to the area they want to take samples of tissue (biopsies) from.
Below is a sample of the sources used in our pancreatic cancer information. If you would like more information about the sources we use, please contact us at firstname.lastname@example.org
British Society of Gastroenterology. Guidelines for the management of patients with pancreatic cancer peri-ampullary and ampullary carcinomas. 2005.
European Society for Medial Oncology. Cancer of the pancreas: ESMO Clinical Practice Guidelines for diagnosis, treatment and follow-up. Annals of Oncology, 2015. 26 (Supplement 5): v56 to v68.
Fernandez-del Castillo. Clinical manifestations, diagnosis, and staging of exocrine pancreatic cancer. UpToDate online. Jan 2018.
Fernandez-del Castillo C, et al. Supportive care of the patient with locally advanced or metastatic exocrine pancreatic cancer. UpToDate online. Feb 2017.
Winter JM, et al. Cancer of the pancreas, DeVita Hellman and Rosenberg’s Cancer: Principles and Practice of Oncology (10th edition). Lippincott Williams and Wilkins. 2016.
This information has been written, revised and edited by Macmillan Cancer Support’s Cancer Information Development team. It has been reviewed by expert medical and health professionals and people living with cancer. It has been approved by Senior Medical Editor, Professor Tim Iveson, Consultant Medical Oncologist.
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