A Lipoid Pneumonia After Machine Oil Ingestion: A Rare Case Report

Aim: Lipoid pneumonia is a clinical and radiological disease that occurs after aspiration of oil-based fluid into the lung. In this case, it is aimed to present a case of exogenous lipoid pneumonia due to accidental machine oil ingestion as a cause of unresolved pneumonia. Case: A 62-year-old male patient presented to the chest disease polyclinic for control because of the aspiration of the machine oil 20 days ago. It was learned that antibiotics were started on an outpatient with a preliminary diagnosis of pneumonia, but there was no radiological improvement. He had a history of benign prostatic hyperplasia and hypothyroidism. In addition, 38% polymorphous core leukocytes, 27% lymphocytes, 29% alveolar macrophages were detected in the bronchoalveolar lavage sample. Methylprednisolone 32 mg/day peroral was started, with the diagnosis of lipoid pneumonia. After treatment, he had radiological improvement in the control chest X-ray and was followed up as an outpatient. Conclusion: The diagnosis of lipoid pneumonia can be missed because of its clinical and radiological confusion with other pneumonia types. In conclusion, the patient’s anamnesis, clinic and imaging should be carefully evaluated and followed up while making the differential diagnosis of non-healing pneumonia.