Endoscopy

Technology

Endoscopy

Introduction​

Endoscopic Ultrasonography (EUS)

  • Endoscopic Ultrasonography (EUS) pairs the technology of endoscope and high frequency ultrasound waves from a transducer placed at the distal tip of the echo endoscope.
  • It is used to visualise gastrointestinal walls and adjacent structures, for cancerous lesions and diseases of mediastinum, abdomen and pelvis.
  • Esophagus, stomach, duodenum, colon, rectum, mediastinum, celiac plexus, liver, gall bladder, hepato-biliary tree, portal venous system, pancreas, mediastinal & abdominal major arteries & veins, mediastinal & abdominal lymph nodes are some of the structures that can be studied with greater detail on EUS.
  • Greek origin word
  • Endo = Inside
  • Skopeein = To see
  • Examination of the interior of a hollow viscus or canal by a special instrument
  • First fiberoptic endoscope by Basil Hirschowitz in 1958
  • Stone in biliary tract
  • Cholangitis
  • Biliary strictures (Benign / Malignant)
  • Biliary leak
  • Pancreatic stones
  • Pancreatic strictures
  • Pancreatic leak