Читать книгу Atlas of Endoscopic Ultrasonography - Группа авторов - Страница 37

The descending aorta is a large echo‐poor longitudinal structure on linear array with a bright deep wall due to the air interface with the left lung. Clockwise rotation will sequentially image left lung, left pleura, left atrium, right lung, right pleura, azygos vein, and spine. The azygos vein can be localized by rotating approximately 30 degrees counterclockwise from the descending aorta. It is a thin echo‐poor structure that can be followed proximally to its union with the superior vena cava. This is the area of LN stations 8 and 9 (Figure 3.3).

Figure 3.3 Lymph node at station 8 (between calipers).

Figure 3.4 Subcarinal station (station 7).