What is the most common pathological type of bronchogenic carcinoma?
Adenocarcinoma is the commonest (35%), followed by squamous cell carcinoma (30%).
What is the commonest type to cavitate?
Squamous cell carcinoma is the commonest pathological subtype to cavitate.
CT study confirms complete collapse of the middle and right lower lobe with low attenuation mucus seen to plug the airways. There is a mass obstructing the proximal right lower lobe bronchus.
The sagittal sections on lung windows make identification of the fissures very simple and therefore aid identification of the exact collapsed lobe.
Note also the widespread emphysematous changes secondary to smoking.