A special form of endoscopy called endoscopic retrograde cholangiopancreaticography, or ERCP, allows pictures of the pancreas, gallbladder, and related structures to be taken. ERCP is also used for stent placement and biopsies. Endoscopic ultrasound or EUS combines upper endoscopy and ultrasound examination to obtain images and information about various parts of the digestive tract. Why Do I Need an Endoscopy? Doctors will often recommend endoscopy to evaluate: Stomach pain; Ulcers, gastritis, or difficulty swallowing
dys-. a combining form meaning âill,â âbad,â used esp. to form words denoting impaired or abnormal biological or mental processes: dyslexia; dysplasia. zer-, Old Norse tor-, Skt dus- ]. 1  Facebook.
Injury to the brain from an internal cause such as stroke and injury to the brain from an external cause such as a head injury can cause normal body functions to go awray. The medical terms of some of the abnormal conditions which occur because of a brain injury are described using the prefix 'dys'. This prefix is not exclusively used to describe brain injury symptoms and can be found in many terms relating to abnormal conditions of the body or mind. The prefix 'dys-' can have four slightly different meanings e.g