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Endoscopic Ultrasound Basics - Gl wall structure- how many layers? 1st layer - hyperechoic - corresponds to the superficial mucosa 2nd layer - hypoechoic - corresponds to the deep mucosa 3rd layer - hyperechoic - corresponds to the submucosa plus the acoustical interface between the submucosa and the muscularis propria 4th layer - hypoechoic - corresponds to the muscularis propria minus the acoustical interface between the submucosa and the musclaris propria 5th layer - hyperechoic - Serosa, subserosal fat Dr. Katarzyna Monika Pawlak @KM_Pawlak #wall #layers #structure #Endoscopic #Ultrasound #eus #gastroenterology