Friday Pop Quiz #24
Answer: E. Parakeratosis in a column over focal dyskeratotic or vacuolated keratinocytes
This is an image of porokeratosis. While the center of the lesion can have variable histopathology (mild spongiosis or psoriasiform dermatitis), the raised border is represented histologically with a column of parakeratosis over often dyskeratotic or vacuolated keratinocytes. Regular elongated rete ridges a …