A Case of Legionella Pneumonia with Rhabdomyolysis, with Extremely high Creatinine Kinase without Acute Kidney Injury in an Adult.

UNLABELLED

is a bacterium that usually causes pulmonary disease but can rarely present with extrapulmonary manifestations, such as rhabdomyolysis. This is a case of Legionella infection with significant rhabdomyolysis but a lack of acute kidney injury. A 38-year-old male with a history of epilepsy presented to the emergency department after a seizure episode with confusion, fever, emesis and bruises. He also complained of a productive cough and scant haemoptysis for the past two months. Chest X-ray showed retrocardiac and left upper lobe opacities; urine was positive for Legionella antigen and myoglobinuria. Creatinine phosphokinase was 242,488 U/l and creatinine was 0.5 mg/dl. The patient was managed with oxygen therapy, aggressive IV hydration and IV azithromycin, and later IV levofloxacin until his symptoms resolved. Rhabdomyolysis may be a sign of Legionella infection. Rapid testing of Legionella antigen, especially in populations at risk, may be crucial for timely diagnosis and treatment. Kidney function may be preserved in the early stages of disease, but early treatment with antibiotics and aggressive hydration are an effective way to prevent deterioration in kidney function.

LEARNING POINTS

Legionella pneumonia is difficult to distinguish from bacterial pneumonia, therefore rapid Legionella testing, particularly in areas with high rates of incidence, is important for targeted therapy.Legionella pneumonia with rhabdomyolysis with extremely high CPK levels is usually associated with AKI but preserved kidney function is possible and early diagnosis and treatment can lead to decreased mortality and morbidity in severe cases.