Case 81. Blastomycosis of lung (48 y-o M)

　 　 　 　
　
Fatally progressive lung lesion in an American black
 　
　 　 　 　

　

 　 Large-sized yeasts, Blastomyces dermatitidis, reveal thick cell wall and internal eosinophilic cytoplasm, with a haloe formed between these two (HE, high power).