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Pathology of Blastomycosis-like Pyoderma

Dr Sampurna Roy MD       





Blastomycosis-like pyoderma is a rare form of pyoderma in immunocompromised patients. Various bacteria have been implicated as possible causative agents.Staphylococcus aureus is the most common causative organism.

Gross: The lesions are usually large verrucous plaques together with numerous pustules.

Microscopic features: A dense inflammatory infiltrate in the dermis together with multiple small abscesses.


These are present in a backround of chronic inflammation.

There is prominent pseudoepithelimatous hyperplasia.

A few granulomas are sometimes present associated with elastotic fibers.


Further reading:

Blastomycosis-like Pyoderma with Good Response to Acitretin.

Blastomycosis-like pyoderma in association with recurrent vesicular hand eczema: good response to acitretin.

A case of blastomycosis-like pyoderma caused by mixed infection of Staphylococcus epidermidis and Trichophyton rubrum.

Blastomycosis-like pyoderma.

Localized blastomycosis-like pyoderma with good response to cotrimoxazol and cryotherapy.

Blastomycosis-like pyoderma in a case of chronic myeloid leukaemia.

Blastomycosis-like pyoderma.





Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)


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