Endoscopic ultrasound-guided fine needle aspiration for diagnosing pancreatic mass in patients with surgically altered upper gastrointestinal anatomy.

Endoscopic ultrasound-guided FNA is a safe and efficient method for diagnosing a pancreatic mass even in patients with surgically altered UGI anatomy. Nevertheless, some sophisticated techniques are required for pancreatic head lesions if reaching the duodenum after passing through the jejunal limb is required for visualization of the pancreatic mass.