4 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... #diagnosis #causes ... #Endocarditis #InfectiousDiseases ... #Microbiology #
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
preparation from culture ... Pathology: • Hematoxylin ... exceptions are Aspergillus ... #microbiology #microscopy ... #staining #diagnosis
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
fastidious bacteria or fungi ... but important causes ... Tropheryma whipplei, Fungi ... BCNIE Diagnostic ... bacteria) and 18S ( fungi
Majocchi’s Granuloma due to Trichophyton rubrum 
This is GMS stain and culture of a skin biopsy
pedis Biopsy: GMS fungal ... Histopath shows fungal ... granulomatous fungal ... common - allows fungus ... Fungal infection