[Pulmonary nocardiosis with a large solitary cavitary nodule caused by Nocardia cyriacigeorgica in a patient receiving corticosteroid therapy].

Nocardiosis is a rare disease generally caused by members of Nocardia asteroides complex, particularly in immunosupressed patients. Nocardia cyriacigeorgica is a newly described member of this complex. In this article, a case of pulmonary nocardiosis with a large solitary cavitary nodule caused by N.