Blastomycosis
Cutaneous lesions / Ajellomyces (Blastomyces) dermatitidis in tissues / Ajellomyces (Blastomyces) dermatitidis
| Blastomycosis: Secondary cutaneous lesions. Aspirates often show yeast cells | ||
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| Typical early lesions | Typical early lesions | Lesion resembling basal cell carcinoma | ||||
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| Papulopustular lesion with some scarring in the center | Older lesions |
| Ajellomyces (Blastomyces) dermatitidis: In tissue samples | |||
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| Systemic blastomycosis (mucin stain) |
In skin (H + E) |
Acute pulmenary | ||||
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| Lung tissue (fluorescence stain) | In pus (unstained) | In giant cell (methenamine silver stain) |
| Ajellomyces (Blastomyces) dermatitidis: The agent of blastomycosis | |||
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| Yeast cells and hyphae | Hyphae and holoblastic conidia | |||
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| Colony on SDA |
L) Holoblastic conidia. R) Yeast cells |
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