[Loosening of osteosynthesis screw as a rare cause of haemorrhagic pleurisy].

The occurrence of haemorrhagic pleurisy in patients with myeloma is most often related to a non-specific cause. Pleural myeloma is rare but this diagnosis should be excluded. We here report a rare case of haemorrhagic pleurisy due to the loosening of an osteosynthesis screw. The study involved a 55-year-old female patient who had been followed up for multiple myeloma since 2012. Diagnosis was confirmed by the presence of haemorrhagic pleural effusion, by chest computerized tomography scan which showed the loosening of left-sided osteosynthesis screw with tip located in the prevertebral region at the level of the pleural effusion and by negative etiological assesment.