Endoscopic Ultrasound

University:
The University Of Western Ontario
Course:
MED 5161 | Principle of Medicine
Academic year:

2025
Views:

425

Pages:

3
Author:

Kyuwon J.

EUS ● Endoscopic Ultrasound ○ Endoscopy + ultrasound imaging ○ Endoscope with ultrasound probe on tip ○ Inserted into gastrointestinal tract ○ Visualization of digestive organs + structures on near proximity ● EU ○ Evaluation of gastrointestinal wall layer ○ Detection of tumors in digestive sys ■ Analyze the stage of it ○ Dx of disease on pancreas and bile duct ○ Tissue biopsy guide ■ Fine needle aspiration Structures ● Digestive tract ○ Esophagus ○ Stomach ○ Duodenum ○ Rectum ● Nearby organs ○ Pancreas ○ Liver ○ Gallbladder ○ Bild ducts ● Other ○ Lymph nodes ○ Blood vessels ○ Other surrounding tissues Indications ● Evaluation of multiple Dx ○ Suspection on pancreatic disease ○ Submucosal lesions ■ Gastrointestinal ○ Staging of gastrointestinal cancer ○ Biliary obst ○ Unknown abdominal pain ● Frequent diagnosis ○ Pancreatic cancer ○ Esophageal cancer ○ Gastric cancer ○ Pancreatitis Methods 1. Ptn receives sedation/anesthesia 2. Endoscope + ultrasound probe is inserted to mouth/rectum 3. Probe emits ultrasound wave a. Production of surrounding tissues 4. FNA could be performed if necessary a. Collection of tissue sample Adv ● High-resolution image ● Is able to catch small cancer that was not shown in CT ● Real time biopsy guidance ● Cancer staging Risk ● Safe, but there are possible risks ○ Bleeding ○ Infection ○ Perforation + gastrointestinal tract ○ Sedation reaction