Acute Pyelonephritis Associated with Transudative Pleural Effusion in a Middle-Aged Woman without Urinary Tract Obstruction

Abstract
Objective: To describe a case of acute pyelonephritis associated with pleural effusion. Clinical Presentation and Intervention: A 39-year-old female non-smoker who had Escherichia coli bacteremia due to acute pyelonephritis, developed bilateral transudative pleural effusions during hospitalization. She was successfully treated with intravenous antibiotic therapy. Follow-up chest radiographs revealed complete resolution of the bilateral pleural effusions. Conclusion: Though quite rare, pleural effusion is a potential complication of acute pyelonephritis. The exact pathogenesis of transudative pleural effusion is unknown, but the effusion may resolve spontaneously when infection is adequately controlled.

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