Peking University First Hospital: Biliary Recanalization via Rendezvous Endoscopic Magnetic Compression Anastomosis
Peking University First Hospital: Biliary Recanalization via Rendezvous Endoscopic Magnetic Compression Anastomosis
Diagnostic Dilemma
🩸 Complete benign biliary strictures secondary to cholecystectomy often leave conventional therapeutic endoscopy at a dead end.
🔬 Recently followed a highly complex case managed by Dr. Qiushi Feng’s team at Peking University First Hospital, where the patient presented with progressive jaundice and both ERCP and PTBD guidewires failed to traverse the stricture.
⚙️ Cholangiography revealed a relatively short stricture segment, providing the anatomical prerequisite to attempt Magnetic Compression Anastomosis (MCA) and avoid a highly invasive hepaticojejunostomy.
Surgical Nuances
💡 Interventional Radiology initiated the procedure by upsizing the existing percutaneous biliary drainage catheter.
🏥 This crucial step was designed to adequately dilate the percutaneous tract, securing enough physical space for the subsequent delivery of the bulky magnetic columns.
🛠️ Once the tract was mature, the endoscopy team executed a highly demanding bidirectional rendezvous technique.
🧲 The operator first advanced a magnetic column to the proximal end of the stricture via percutaneous transhepatic cholangioscopy (PTCS).
🪡 Immediately after, a second magnetic column was delivered to the distal end of the stricture retrogradely via ERCP through the major duodenal papilla.
Clinical Pearls
🎯 The two magnets successfully approximated across the fibrotic tissue, utilizing powerful magnetic attraction.
⏳ Over several weeks of continuous physical compression, the intervening scar tissue underwent ischemic necrosis, resulting in a seamless, non-surgical recanalization of the obliterated biliary tract.
🧠 Following recanalization, a fully covered metal stent (FCMS) was deployed at the stricture site, perfectly preserving the patient's native biliary anatomy.
📸 The attached images clearly demonstrate the fluoroscopic view of the approximated magnets across the stricture and the final stent configuration.