| Location of echoendoscope tip | Anatomic structure |
| Proximal esophagus | - Subclavian artery
- Trachea
- Thyroid gland
- Thymus gland (not visible in all patients)
- Carotid arteries
- Jugular veins
|
| Mid-esophagus | - Aorta, evolving into the aortic arch
- Spine
- Azygous vein
- Thoracic duct
- Superior vena cava
- Left and right bronchi evolving into the trachea
- Mediastinal lymph nodes
|
| Distal esophagus | - Aorta
- Spine
- Left lobe of the liver
- Inferior vena cava
- Hepatic structures (hepatic veins and bile ducts)
- Left atrium
- Left pulmonary artery and the pulmonary veins
- Lungs
|
| Gastric body | - Confluence of splenic and portal vein
- Body/tail of pancreas
- Pancreatic duct
- Left kidney
- Left renal vein
- Left renal artery
- Celiac axis
- Aorta
- Superior mesenteric artery
|
| Gastric antrum | - Confluence of splenic and portal veins
- Pancreas
- Liver
- Gallbladder
|
| Duodenal bulb | - Pancreas
- Pancreatic duct
- Liver
- Gallbladder
- Common bile duct
- Portal vein
|
| Duodenum: Ampullary region | - Head of pancreas
- Pancreatic duct
- Common bile duct
- Portal vein
- Ampulla
|
| Duodenum: Post-ampullary region | - Pancreatic head/uncinate process
- Inferior vena cava
- Aorta
- Superior mesenteric artery
- Superior mesenteric vein
- Pancreatic duct
- Right kidney
|
