Figure 18-3

Figure 18-3. EUS image of an esophageal cancer in close proximity to mediastinal structures. Curved open black arrow: Muscularis propria, fourth hypoechoic layer. Solid white arrow: The tumor extending from the mucosa through the muscularis propria (T3). Angled arrow: Distinct fat plane between the tumor and right bronchus, indicating absence of bronchial invasion. Short curved arrow: Hyperechoic (bright white) plane between the tumor and right pleura. The tumor mass extends to the pleura but does not definitively invade. Curved arrow (bottom of image): Intact fat plane between the tumor and thoracic aorta.