A 55-year-old Caucasian woman with common bile ductal calculus was referred for endoscopic
retrograde cholangiopancreatography (ERCP) after a failed procedure at another facility.
Endoscopy revealed a hooded, elongated, inverse pitcher-type diverticulum with an
invisible ampulla. The “trunk” of this diverticulum was at least 5 cm long ([Fig. 1]). Multiple attempts by two experienced endoscopists to identify and cannulate the
ampulla were futile. Therefore, a linear array echoendocope was advanced into the
duodenum, and a 9-mm bile duct with 8-mm calculus was identified. The duct was punctured
with a 19-G flexible needle (Boston Scientific, Natick, Massachusetts, USA). After
contrast injection, a 0.025-inch guidewire (Visiglide, Olympus, Melville, New York,
USA) was placed in the bile duct and slowly advanced through the ampulla ([Fig. 2]) [1]. Following withdrawal of the echoendoscope, the guidewire was left in situ and a
duodenoscope was advanced. The duodenal portion of the guidewire was removed through
the biopsy channel of the duodenoscope while the biliary end of the guidewire was
advanced slowly by an assistant. A biliary brush catheter (Cook Medical, Bloomington,
Indiana, USA) was passed over the guidewire after removal of the metal brush. Contrast
injection confirmed placement of the catheter tip inferior to the bile duct puncture
site. Another 0.025-inch guidewire (Visiglide) was advanced through the other channel
of the catheter and placed into the intrahepatic bile duct followed by removal of
the rendezvous guidewire. A biliary sphincterotomy could not be carried out as the
ampulla was not visible. Therefore, a primary balloon sphincteroplasty with an 8-mm
balloon enabled removal of the calculus with an extraction balloon. A 10-Fr, 15-cm
plastic biliary stent was then placed to protect against bile leak ([Video 1]). The patient was observed overnight and discharged without complications.
Fig. 1 Endoscopic view of the inverse-pitcher ampulla in a 55-year-old Caucasian woman presenting
with ductal calculus.
Fig. 2 Fluoroscopic image of endoscopic ultrasound (EUS)-guided bile duct puncture and placement
of guidewire into the duodenum. Note the elongated duodenal diverticulum.
Demonstration of the endoscopic ultrasound (EUS)-guided biliary rendezvous procedure
with biliary sphincteroplasty, stone extraction, and stent insertion.
This case highlights the utility of the biliary rendezvous technique for deep biliary
access in case of an invisible ampulla, the need for a dual-channel catheter for deep
cannulation of the bile duct in rendezvous procedures, and the value of primary sphincteroplasty
for stone extraction in cases where sphincterotomy is deemed unsafe or impossible.
Endoscopy_UCTN_Code_TTT_1AS_2AD
