Fig. 1

Image findings. a On POD 9, unilateral consolidation appeared on the right lower field. Bacterial pneumonia was thought to have occurred as a common cause of postoperative complication and broad antibiotic therapy using meropenem was started. b After the initiation of meropenem, on POD 14, chest X-ray radiographs and computed tomography scans showed gradually worsening (ground glass, reticular shadows, consolidation, and pleural effusion only on the right operative side). On POD 21, the consolidation on the right side had exacerbated regardless of the administration of meropenem. Thus, we started to question if meropenem itself provoked and worsened the patient’s condition by causing drug-induced AEP. c On POD 43, after cessation of meropenem and use of oral prednisolone, the abnormal shadow in the chest X-ray radiographs and computed tomography scans completely disappeared and the patient responded to treatment