[Diagnosis of post-traumatic pleural effusion].

A rare case of post-traumatic pleural effusion is reported. A 19 year old male patient was admitted after a road traffic accident with a scalp wound, femoral shaft fracture and haematuria related to a ruptured bladder. Shortly after extubation following bladder surgical repair, the patient had to be reintubated because of acute respiratory failure. A large left-sided pleural effusion was then diagnosed. The liquid was sero-haematic and contained a high concentration of creatinine (839 mumol.l-1). Thoracic CT scan and intravenous urography displayed a left epirenal collection and a dilatation of the upper urinary tract with rupture of the renal pelvis. The surgical treatment of this urinothorax consisted of the rupture repair of the posterior diaphragm and of the urinary tract.