Percutaneous gastrostomy tube placement to perform transgastrostomy endoscopic retrograde cholangiopancreaticography in patients with Roux-en-Y anatomy.

Background: Roux-en-Y gastric bypass (RYGB) surgery is one of the most commonly performed bariatric surgeries in the United States. Patients with prior RYGB are not amenable to conventional endoscopic retrograde cholangiopancreaticography (ERCP). Surgical gastrostomy (SG) tube placement enables transgastrostomy ERCP (TG-ERCP).

Single-balloon enteroscopy effectively enables diagnostic and therapeutic retrograde cholangiography in patients with surgically altered anatomy.

Background: In patients with surgically altered anatomy, ERCP is often unsuccessful. Single-balloon enteroscopy (SBE) enables deep intubation of the small bowel, permitting diagnostic and therapeutic ERCP in this subset of patients.

Objective: To determine the effectiveness of SBE in performing endoscopic retrograde cholangiography (ERC) in patients with surgically altered anatomy.