Fig. 1From: Spontaneous right whole-lung torsion secondary to bronchial carcinoma: a case reportUpper images: Chest X-ray showing right sided lung atelectasis and pleural effusion. On the right: Chest-CT showing downward rotation of the congested and completely atelectatic upper lobe (UL) to the base of the chest cavity with concomitant upward shift of the middle (ML) and lower lobe (LL). Also note the upward torsion of the pulmonary artery to the right lower lobe resulting in a typical ‘whirl sign’ (arrow). Lower images: Brochoscopy showing compression/torsion of the right mainstem bronchus (left image). Whereas the upper lobe bronchus was completely obstructed, the middle (ML) and lower lobe bronchus (LL) showed rightward torsion resulting in partial obstruction of the corresponding lobes (right image)Back to article page