Retroperitoneal pseudotumor related to native brucellosis in France

Despite their rarity, some causes of retroperitoneal granulomatous tumor must be kept in mind. We report a 41-year-old man who presented with a right psoas mass. No spondylitis was associated. The patient had never travelled. He had never eaten foreign exotic fresh aliments. Serology and specific PCR were positive for brucellosis. The course was favorable after a percutaneous drainage and a combined antibiotic therapy (rifampin and doxycycline). Brucellosis is close to be eradicated in France. The large majority of new French cases result from accidental laboratory contamination or from a journey abroad. This case report highlights the possibility of excessively rare native brucellosis cases in France.