摘要
Case presentation A 66-year-old female patient underwent esophagogastroduodenoscopy(EGD)in our center because of occasional dysphagia,and a large submucosal tumor(SMT)was identified 32–36cm from the incisors,occupying nearly half of the luminal circumference(Figure 1A).Mini-probe endoscopic ultrasonography(EUS)revealed a hypoechoic submucosal lesion,measuring 20×15mm and originating from the superficial muscularis propria layer(Figure 1B).It was covered by normal-appearing mucosa.
