Stening 
“Direct and indirect” signs of severe neoplastic process that protrudes towards the tracheal lumen from its posterior wall in the proximity of the bifurcation. Irregular and bulky thickening of the entire mucosa that surrounds an asymmetric tracheal lumen, whose deformation increases when entering the main bronchi. The carnal edge has been lost and its widening … Read more
Mucopurulent secretions. In patients prostrated or with bronchial immobility due to the passive atelectasis that accompanies the effusions, the secretions can fill the lower bronchi, flooding them. You can see the secretions “retained” within the adynamic bronchi that accumulate there due to their decline.
Soft, very circumscribed superelevation in the intermediate bronchial mucosa that does not go unnoticed due to its noticeable change in coloration that contrasts with superficial vessels.
Intramural lesion that in its growth advances into the interior of a trachea with “triangular light” zones, as is usually the case in some cases of chronic cough.
Another case of intramural injury (at 10 o’clock), next to an abnormally widened spur.
Example of “intramural” injury. The tumor deforms the light by occupying the wall without destroying the mucosa yet. Positive biopsy. Undifferentiated carcinoma.
This carcinoma occurs in the trachea with a very smooth surface which will suspect a carcinoid tumor. Note the intense mucosal vascularization that with a more or less parallel disposition is directed to the tumor.
Partial view of the right lower lobe, with segmental basal lines aligned. At hour 11 and in the distance the paracardiac (RB7) is observed, occluded by a smooth and vascularized formation.
Remarkable pallor of this bronchial wall that contrasts with the superficial vessels that form small islands. Thickening and rigidity conferred by an adenocarcinoma that has invaded the mediastinum.
Another form of presentation of the endobronchial tumor that occurs frequently: only whitish formation. It is no more than necrotic tissue on the surface because it is the furthest point from its base of vascularized implantation. The secretions cover it and can dry out due to the disturbance in the airflow produced by the tumor.