Figure 1: (A) Right-sided chest wall swelling (arrow). (B) Chest X-ray showing right upper lobe consolidation with cavitation (arrow). (C) Computed tomography scan thorax showing right-sided empyema with rib erosion (arrow). (D) Gram staining of sputum under ×100 magnification shows Gram-negative bacilli in chains. (E) Sputum culture done in MacConkey agar shows pink lactose fermenting colonies of Klebsiella pneumoniae.