The "Pathogenic Yeast"
Cryptococcus neoformans and Cryptococcosis

Cryptococcus neoformans  /  Cryptococcus neoformans captules in tissue  /  Cryptococcus neoformans yeasts in tissue  /  Pulmonary cryptococcosis  / 
Cerebral cryptococcosis  /  Cutaneous lesions

  Filobasidiella (Cryptococcus) neoformans  
       
     
  Slimy culture on agar medium   Encapsulated yeast cells in black ink  
         

 

  Filobasidiella (Cryptococcus) neoformans:
     in tissue samples showing captules  
       
  Lung tissue with acetocarmine   H + E   H + E  
             
     
  Lung tissue in Gridley stain   Rare residual pulmonary lesion  
         
   

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  Filobasidiella (Cryptococcus) neoformans:  
    acapsular yeasts in tissue  
       
  GMS / H + E   Meyer's   Methenamine silver  
             

 

  Pulmonary cryptococcosis in AIDS patients:  
       
       
  Single solitary nodule   Lobar pneumonia   Bilateral diffuse infiltrate  
             
   

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  Cerebral cryptococcosis: Fatal disease
       
       
  In convoluted cortex   In sulci   Stained by methenamine silver  
             

 

  Cutaneous lesions resulting from disseminated cryptococcosis
       
       
  Solitary lesion on forehead   Draining lesions on forearm   "Superficial" lesions involving mucocutaneous area of nose  
             
   

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