Demystifying Advanced Endoscopy — What to Expect During EUS and ERCP

Dr. Randeep Rana

MD, DM (AIIMS) • Consultant Gastroenterologist, Hepatologist & Pancreatologist

July 2026

A complete guide to Endoscopic Ultrasound (EUS) and ERCP: how painless sedation works, key diagnostic uses, and surgical avoidance.

Beyond Standard Endoscopy

Endoscopy has evolved far beyond simple visual inspection. Advanced procedures like Endoscopic Ultrasound (EUS) and Endoscopic Retrograde Cholangiopancreatography (ERCP) are critical tools enabling precise diagnosis and minimally invasive treatment of complex GI, liver, and pancreatic conditions.

What to Expect During Endoscopic Ultrasound (EUS)

EUS combines endoscopy with high-frequency ultrasound to produce detailed images of the digestive tract and surrounding organs. It is used to evaluate pancreatic cysts, tumors, and bile duct stones, perform fine-needle aspiration (FNA) tissue sampling, and drain fluid collections under painless sedation.

Understanding ERCP Interventions

ERCP is a specialized technique used to examine and treat bile duct and pancreatic duct disorders. It is primarily used to extract gallstones blocking the bile duct, place plastic or metal stents to relieve jaundice, and sample strictures.

Safety, Sedation & AIIMS Expertise

Both EUS and ERCP are performed with high safety standards under monitored sedation. They typically result in shorter hospital stays, reduced pain, and faster recovery compared to open surgery. Dr. Rana's extensive fellowship training at AIIMS ensures expert procedural care.

Key Clinical Takeaways

EUS combines ultrasound and endoscopy for accurate pancreatic tissue sampling (FNA).

ERCP extracts bile duct stones and places stents without surgical incisions.

All advanced procedures are performed under painless, monitored sedation.

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