ANSWER: ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP)
EXPLANATION: Endoscopic retrograde cholangiopancreatography (ERCP) refers to a medical procedure or technique which combines the use of endoscopy (i.e the use of endoscope to examine the inner organ or cavity of the body) and fluoroscopy (a medical imaging technique that display a continuous X-ray image on a monitor) to diagnose and treat specific problems of the pancreatic or biliary ductal systems.
However, through the endoscope, the physician (an highly skilled and specialty trained gastroenterologists) see the inside of the stomach and duodenum, and incorporate a contrast medium into the ducts in the biliary tree and pancreas, which results to be seen on the radiographs.
ERCP is basically used to diagnose and treat conditions of the bile ducts and main pancreatic duct (as stated in the first paragraph), this conditions include gallstones, cancer, inflammatory strictures (scars), leaks from surgery and trauma) etc.
