Mycology Flashcards
Talaromycosis - species
Talaromycosis marneffei (Mould in the cold, yeast in the beast)
Talaromycosis geographical region
SE Asia, Southern China, Northeastern India
Talaromycosis transmission
Inhalation of spores from the soil, possibly association with the bamboo rat
Talaromycosis clinical features
Skin lesions common in 70% of cases - look like molluscum contagiosum and can have genital ulcers
Lymphadenopathy
Hepatosplenomegaly in HIV patients
Talaromycosis diagnostics
Microscopy
Culture (surrounding red pigment)
Serology
PCR
Treatment talaromycosis
- Amphotericin B 1-2 weeks then itraconazole 12 months
- Maintenance lifelong or until immune recovery in those with HIV (prophylaxis if CD4 <100)
Paracoccidiodomycosis (P brasiliensis, lutzii) distribution
Central and South America (especially brazil - 80% of cases) - Tarzan holding the wheel
Paracoccidiodomycosis - clinical features
Acute: lymphadenopathy, fever, hepatosplenomegaly
Skin lesions in 50%
Chronic: Vegetative/crusted lesions, ulcers, multiform stomatitis with gingival involement
Paracoccidiodomycosis - treatment
Amphotericin B
Itraconazole
Histoplasmosis - organism
Histoplasma capsulatum
Histoplasmosis - distribution
River valleys in Central/South America (remember the case discussion case) and Africa
Histoplasmosis - transmission
Inhalation of spores from bird/bat droppings
Histoplasmosis clinical features
Pulmonary symptoms resembling TB
Disseminated disease with cutaneous involvement with papules, nodules which can become necrotic in immunocompromised. Mucocutaneous granulomas and ulcers also possible
Azole - example, indication and side effects
Iraconazole/fluconazole
Candida, aspergillosis
Hepatotoxicity and prolonged QT
Caspofungin - indication and side effects
Invasive candidiasis, aspergillosis
hepatotoxicity, rash, headache