<unk>  is a radiographic sign seen in lobar collapse or after lobectomy of the lung. This sign was first described by Katten and colleagues in 1980, and therefore, it is also called Katten's sign. The<unk> <unk>  is most commonly caused due to the traction from the inferior accessory fissure. The prevalence of the<unk>  increases gradually during the weeks after lobectomy of the lung.
Juxtaphrenic peak sign
Diaphragmatic paradox
Hot quadrate sign
Intrinsicoid deflection
Non-lifting sign
Collapsing pulse
Empty delta sign
Broadbent sign