1 Department of Radiology, Ospedale GB Morgagni, Forlì, Italy. Electronic address: piciucchi.sara@gmail.com.
2 Department of Diseases of the Thorax, Ospedale GB Morgagni, Forlì, Italy.
3 Department of Radiology, Ospedale GB Morgagni, Forlì, Italy.
4 Department of Diseases of the Thorax, Ospedale GB Morgagni, Forlì, Italy; Department of Respiratory Diseases & Allergy, Aarhus University Hospital, Aarhus, Denmark.