Case 66. Aspiration pneumonia (69 y-o F)

　 　 　 　
　
Pneumonia seen in a dysphagic patient suffering from esophageal cancer
 　
　 　 　 　

　

 　 E. coli antigens (lipopolysaccharides) are demonstrated in the cytoplasm of phagocytic cells (immunostaining). Opportunistic infection of Gram-negative enteric bacteria is indicated.