Hybrid retroperitoneal necrosectomy using a triple-port approach under endoscopic guidance.

Complex walled-off necrosis with a retroperitoneal component represent a therapeutic challenge. Although mini-invasive approaches have been described, hybrid procedures combining surgical, endoscopic and radiological techniques have slightly been evaluated. A 58 years-old male presented with a 20-cm infected multilocular walled-off necrosis. First, endoscopic-ultrasound guided cystogastrostomy using a lumen-apposing metal stent with further necrosectomy was performed, but the access to distal retroperitoneal collection was average.