Myelomatous pleural effusion.

Pleural effusions in multiple myeloma are relatively infrequent and more so myelomatous ones. We report a 66-year-old man who presented with multiple myeloma and a myelomatous right-sided pleural effusion. The diagnosis was made by repeated cytopathological pleural fluid examinations. The patient received one cycle of cyclophosphamide and methylprednisolone but despite therapy patient showed a downhill course. We reviewed the clinical features of this case and literature concerning multiple myeloma presenting as pleural effusion.