Fig. 5
From: The role of MRI in the diagnosis and management of tracheal diverticulum
Axial T2-TIRM (a) showed a high signal mass behind the upper trachea (arrow) with an irregular and ill-defined margin. The sign that local thickening and signal increase of posterolateral wall of the upper trachea (arrowhead) suggests that the lesion may arise from the tracheal diverticulum. The esophageal wall was intact. The lesion gradually resolved, and the signal was gradually decreased after 2 days (b), 4 days (c), 7 days (d) and 21 days (e) of conservative treatment