Feline cytauxzoonosis: a case report and literature review.

A 5.5-year-old Siamese presented for evaluation of a three-day history of anorexia and lethargy. Upon physical examination, the cat was depressed, dehydrated, pyrexic, had injected conjunctiva and sclera, pale mucous membranes, and a grade II/VI systolic heart murmur. Thoracic radiographs revealed moderate to severe, diffuse, bronchointerstitial pulmonary changes with enlarged and tortuous pulmonary vessels. With continued hospitalization, the cat became dyspneic and died. The postmortem cytopathological examination of the liver, spleen, and lung impressions revealed reticuloendothelial cell infection with Cytauxzoon felis.