MYCOTIC FOLLICULITIS,  KERION CLINICALLY
Biopsy of a boggy lesion from a hair-bearing area from which thick pus could be exuded from follicles.

Superficial fungus infections are so readily treated that species identification by culture is a rare event. I don't try to make a species identification based on a biopsy. Mycotic folliculitis with the degree of inflammation that is seen in this case is sometimes caused by a zoonotic fungus (from an animal), but some human species can do this. 


Scan.
Low power of top of above.
High power periodic acid Schiff stain of above. Note hyphae near left side and yeast forms to right.
Low power showing inflamed granulation tissue that contains numerous polymorphonuclear leukocytes. From the deep aspect of the lesion.
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