BLASTOMYCOTIC DERMATITIS IN MAN 



431 



LeCount, Montgomery and Hyde, Ricketts, Anthony and Herzog, 

 and others. Clinically they closely resemble certain skin cancers or 

 the warty form of skin tuberculosis (tuberculosis verrucosa cutis), and 

 they were formerly mistaken for these affections. The histologic 

 features of blastomycotic dermatitis are a hypertrophy of the epithelial 

 layers with the formation of pegs and bands, as seen in carcinoma, 

 and an inflammatory reaction in the derma and the subcutaneous 



FIG. 177 



'A 



Blastomycosis of the skin. Vertical section from a typical lesion, a, hyperplasia of rete; 

 6, abscesses in epithelium; c, infiltration of cutis. X 55. 



connective tissue. In the hypertrophied masses of epithelial cells 

 miliary abscesses are found which contain the budding fungi. These 

 can best be demonstrated in sections by the eosin-methylene-blue stain, 

 and they can also be seen in squeezed-out pus in the unstained, moist 

 cover-glass preparation. Hyde and Montgomery have described 

 pure cultures of these organisms raised on glycerin and glucose agar 

 as follows: 

 The time required for the development of the different organisms 



