Introduction: Simultaneous malignant distal biliary obstruction (MDBO) and gastric outlet obstruction (GOO), commonly caused by advanced pancreatic, biliary, or duodenal cancers, presents a major palliative challenge. Conventional endoscopic approaches often require repeated interventions and may be technically difficult when both obstructions coexist.
Introduction:
Simultaneous malignant distal biliary obstruction (MDBO) and gastric outlet obstruction (GOO), commonly caused by advanced pancreatic, biliary, or duodenal cancers, presents a major palliative challenge. Conventional endoscopic approaches often require repeated interventions and may be technically difficult when both obstructions coexist. Endoscopic ultrasound (EUS)-guided double drainage has emerged as an innovative minimally invasive strategy to address both obstructions in a single therapeutic approach.
Problem Statement:
Traditional management with ERCP and enteral stenting is frequently limited by anatomical distortion, stent dysfunction, and the need for repeat procedures. Surgical bypass remains effective but is associated with greater morbidity, particularly in frail patients with advanced malignancy. A durable, less invasive alternative is needed to improve symptom control and quality of life.
Summary:
This review highlights the growing role of EUS-guided double drainage (EUS-DD), combining EUS-guided gastroenterostomy (EUS-GE) and EUS-guided biliary drainage (EUS-BD), for patients with synchronous malignant gastric outlet and distal biliary obstruction. EUS-GE restores enteral passage by creating a bypass to the small bowel, while EUS-BD provides internal biliary drainage when ERCP is unsuccessful or not feasible. Together, these procedures offer effective relief of obstructive symptoms without the need for surgery. Compared with conventional endoscopic techniques, EUS-DD is associated with improved long-term patency, fewer reinterventions, and durable palliation, while achieving outcomes comparable to surgical bypass in selected patients. The approach is particularly valuable for patients with advanced malignancy who are poor surgical candidates. However, EUS-DD is technically demanding and should currently be performed only in experienced, high-volume centers with multidisciplinary interventional and surgical support. Successful implementation requires advanced EUS expertise, dedicated training, and careful patient selection. As procedural experience, training pathways, and supporting evidence continue to expand, EUS-guided double drainage is expected to become the preferred endoscopic palliative strategy for malignant dual obstruction in appropriately equipped centers.
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