Fig. 3From: Spontaneous torsion of the right upper lung lobe: a case report a Sagittal CT at the onset of torsion showed that the right upper lung lobe with the large tumor had rotated 90° counterclockwise toward the hilum. b Three-dimensional CT by the view of posterior showed that the middle and lower lung lobes had been pushed upward and forward respectively. The blank space showed a tumor. RUL right upper lobe, RML right middle lobe, RLL right lower lobeBack to article page