Endoscopic ultrasonography for gastric submucosal lesions

Figure 1 Gastric endoscopic ultrasonography. Note the 5 distinct layers that comprise the gastric wall.

Figure 2 Gastric gastrointestinal stromal cell tumors: Endoscopic aspects, endoscopic ultrasonography-imaging and tissue sampling. A: Endoscopic image of the lesion; note that the lesion is covered by a normal mucosa with a central umbilication (black arrow); B: EUS imaging of the lesion, which is located in the 4th echo-poor layer (muscularis propria); C: EUS-FNA of the lesion; note the presence of the needle (white arrow); D: Histological specimen of the EUS-FNA. EUS:Endoscopic ultrasonography; EUS-FNA: EUS-guided fne needle aspiration.

Figure 3 Pancreatic rest of the stomach: Endoscopic and endoscopic ultrasonography -imaging. A: Endoscopic image of a pancreatic rest. Note the duct opening on the surface of lesion is covered by a normal mucosa with a central umbilication (arrow); B: EUS imaging of the lesion which originates from the 3rd layer, i.e. the submucosa (arrow); note the lesion’s mixed echogenicity. EUS: Endoscopic ultrasonography.

Figure 4 Duplication cyst of the stomach. A: Endoscopic image of the lesion (retrograde view); B: EUS imaging of the same lesion; note the lesion’s 3-layer structure which originates from the 3rd layer, i.e. the submucosa (arrow). EUS: Endoscopic ultrasonography.

Figure 5 Gastric varices in endoscopy and endoscopic ultrasonography. A, B: Endoscopic image of gastric varices presenting as thick serpiginous structures, covered by normal mucosa; C: EUS imaging of the varices; note their tortuous, anechoic structure which originates from the 3rd layer, i.e. the submucosa (arrow); D: EUS Doppler imaging of the same varices; the positive signal denotes their vascular origin. EUS: Endoscopic ultrasonography.