ABSTRACT
299 pleural effusion admitted to the hospital in 25 months 263 of these are confirmed by puncture which 219 pleuresies with clear and haemorrhagic fluid with no associated pneumothorax More than the two-thirds of the patients are male, the most reliable means of investigation remains the pleural biopsy with the Abrams needle which is systematically used. It has often led to adjust the diagnosis suggested by the clinical context. The tuberculosis is the dominating aetiology: 108 cases are confirmed on the biopsy and 58 cases are suspected which makes a total of 166 cases [75.80%], then pleural metastasis [confirmed in 9 cases, suspected in 11] [9,1]. The cardiovascular aetiology represents 14 cases [6.39%], different other causes 10 cases [4,56%], aetiologies 9 cases [4,10%]