"Risk factors "
"Differential diagnosis "
"Pulmonary nocardiosis is an infrequent but severe opportunistic infection typified by necrotic or cavitary consolidation in an immunocompromised patient. It is caused by Nocardia spp."
"Pulmonary nocardiosis is most commonly caused by Nocardia asteroides, which is an aerobic gram-positive weakly acid-fast bacterium distributed worldwide in soils. Other less common species include Nocardia farcinica and Nocardia otitidiscaviarum 3. It is usually acquired by direct inhalation of contaminated soil."
Expected headings
"Risk factors "
"Plain radiograph / CT"
"Differential diagnosis "
"There are several reported radiographic patterns which include:"