Fine-needle aspiration findings of the liver in a case of Q fever.

This report describes the cytologic findings in Q fever involving the liver in a 59-yr-old man. The fine-needle aspiration findings are correlated with a surgical needle biopsy performed concurrently. Cytopathologists should include Q fever in their differential diagnosis of granulomatous inflammation. Ring granulomas, which can be seen in an aspiration biopsy, should suggest the diagnosis of Q fever.