Q Fever Presented as a Large Retroperitoneal Pseudotumoral Mass.

Background: Q fever is an infection caused by , an intracellular organism. Acute infection is most often a benign and asymptomatic process; however, some individuals may go on to develop subacute and persistent localized symptomatic Q fever. As such, the clinical and histopathologic findings of Q fever are widely variable and may be missed if clinical suspicion is not high.