Computed tomography and magnetic resonance imaging of cat-scratch disease: a report of two cases.

Cat-scratch disease (CSD) is a bacterial infection that typically causes swelling of the lymph nodes. The patients usually have a history of being scratched, bitten, or licked by cats and often by kittens. Understanding the characteristic radiological and clinical features may lead to a noninvasive diagnosis and prevent unnecessary invasive procedures. We report two cases of CSD with computed tomography and magnetic resonance imaging showing nodules or masses of lymphadenopathy with subcutaneous edema and fat infiltration in the lymphatic drainage area. The imaging features and clinical manifestations are described, and the differential diagnosis of CSD is discussed.