Progressive wall thickening or appearance/increase of a nodule inside or outside a cystic airspace should raise suspicion of lung cancer irrespective of FDG uptake.

The radiologist is usually the first to raise a suspicion of PAS in patients with severe dyspnoea and filling defect in the pulmonary artery, unresponsive to anticoagulation therapy. Combining CT and PET-CT proved to be extremely useful in assessing patients with suspected PAS. Early diagnosis with the help of integrated imaging remains today the main direction to pursue in order to obtain improvements in prognosis.

No abstract

Saber-sheath trachea is linked to the functional severity of airway obstruction, but not to other radiological signs of COPD. Thus, evaluation of the trachea at chest radiography is strongly recommended.