Fig. 1From: Comparing endoscopic ultrasonography and double contrast-enhanced ultrasonography in the preoperative diagnosis of gastric stromal tumorA 53-year-old man with a gastric stromal tumor (GST). (A, B) Endoscopic ultrasonography (EUS) detected a solid, round, and hypoechoic tumor(calipers) in the gastric antrum. (C) Single oral contrast-enhanced ultrasonography (SOCEUS) showed a round, hypoechoic, and heterogeneous mass (calipers) located in the antrum of the stomachBack to article page