Case 65. MRSA pneumonia (78 y-o M)

　 　 　 　
　 Cavity-forming pneumonia (lung abscess) seen after surgical replacement for aortic dissection 　
　 　 　 　

　

 　 The coccal colonies are uniformly Gram-positive (Gram). Microbial culture of the lung tissue obtained at autopsy confirmed nosocomial infection of MRSA.