Atypical mycobacteria
LEGEND
- Formation of suppurative granulomas in the dermis
Epidermal hyperplasia
Atypical mycobacteria
LEGEND
- Pseudoepitheliomatous hyperplasia (reactive epidermal proliferation)
- Suppurative granulomas
Atypical mycobacteria
LEGEND
Suppurative granulomas, defined as a collection of epithelioid histiocytes with formation of multinucleated giant cells and an abundant neutrophilic infiltrate
Atypical mycobacteria
LEGEND
Suppurative granulomas, defined as a collection of epithelioid histiocytes with formation of multinucleated giant cells and an abundant neutrophilic infiltrate
Atypical mycobacteria
LEGEND
- Suppurative granulomas with dense neutrophilic infiltrate
Multinucleated giant cells
Mixed inflammatory infiltrate composed of polymorphonuclear cells, lymphocytes and histiocytes
- Edematous stroma
Atypical mycobacteria
LEGEND
Langhans-type giant cells have traditionally been associated with mycobacterial infections, although they may be found in various granulomatous conditions
- Multinucleated giant cells of Langhans type (characterized by an arc of peripheral nuclei, resembling a horseshoe)
Atypical mycobacteria
LEGEND
These cells are formed by the fusion of macrophages, a common finding in granulomatous entities
- Multinucleated giant cells
