The entrance to the upper right lobe bronchus is occluded.
In this case, the adenoma presents a familiar aspect.
The surface is smooth and a dense submucosal vascular network gives it an intense coloration.
Unlike the previous case, this adenoma that obstructs the left source bronchus presents several protrusions in its surface.
Thus, it is easily confused with other types of tumors, especially due to the enlarged appearance of the tracheal carina.