Early gastric cancer presenting as a typical submucosal tumor cured by endoscopic submucosal dissection: A case report

Figure 2 Endoscopic ultrasound images. A: Initial endoscopic ultrasound (EUS) image showing a well-circumscribed homogeneous and hypoechogenic mass measuring about 15 mm × 7 mm originating from the second sonographic layer with associated subtle obliteration of the third sonographic layer; B: EUS image obtained 4 years after the initial examination showing a well-circumscribed, hypoechogenic mass of greater size (18 mm × 9 mm) with slightly more heterogeneous echogenicity, and that the mass originated from the second sonographic layer with associated subtle obliteration of the third sonographic layer.