Читать книгу Atlas of Endoscopic Ultrasonography - Группа авторов - Страница 33

The LNs in the mediastinum were classified in different stations based on surgical and anatomical landmarks for the purpose of staging lung cancer but this schema is now widely used in other chest diseases (Figure 3.1). The LNs with their respective stations and corresponding anatomical locations are described in Table 3.1.

EUS‐FNA is usually best suited to sample LNs adjacent to the esophagus which runs posterior to the trachea. Because of ultrasound artifacts created by the air‐filled trachea, lesions immediately anterior to the trachea are not well seen. EUS‐accessible stations include 2L, 2R, 4L, 4R, 5, 7, 8, 9, and, sometimes depending on the size, station 6. On the other hand, EBUS‐TBNA can target LNs either anterior or lateral to the trachea to the level of the carina, and alongside the left and right bronchial tree including stations 2L, 2R, 4L, 4R, 7, 10, and 11. Although both procedures overlap in stations 2 L/R, 4 L/R, and 7, in other stations they are complementary, and in combination allow nearly complete mediastinal access.