Infectious Dx: Fungal Infections Flashcards
Where would you commonly suspect Blastomyces dermatitidis to be localized from?
The Mississippi, Missouri, Ohio river valleys and the Great Lakes
How would you describe B. dermatitidis on cytology?
Thick walled yeast with broad based budding
How can blastomycosis present in infected dogs and cats?
Dyspnea, increased bronchovesicular signs, weight loss, ocular manifestations, draining skin lesions/ dermal abscesses and CNS disease
While fungal infections from B. dermatitidis are more commonly inhaled, resulting in infection, are they more likely to have localized or systemic presentations?
Either
Radiographic lesions of B. dermatitidis often closely resemble what pathological process in dogs?
Osteosarcoma
Histoplasma capsulatum is often localized to what area of the United States?
Ohio, Missouri, and Mississippi river valleys (similar to Blastomycosis)
H.capsulatum is more often directly inhaled, but can also be ____________.
Ingested
What is commonly seen in patients with Histoplasmosis, in regards to the targeted organs from systemic dissemination?
Hepatosplenomegaly
While ____________ can be seen in patients with Blastomycosis (chemistry panel), what can be seen on the erythrogram of patients with Histoplasmosis?
Blastomycosis = Hypercalcemia
Histoplasmosis = Non-regenerative anemia, thrombocytopenia
How would you describe Histoplasmosis on cytology?
Clustered, mononuclear with thin, clear haloes surrounding a basophilic cytoplasm
Similar to Nocardia, Coccidiodes immitis is also a __________ that can be found in the southwestern US.
Saprophyte
While systemic involvement can be seen with Coccioidioidomycosis, it primarily results in localized __________ infections.
Respiratory
If dogs are more likely to get ______________ compared to cats, and both dogs and cats are equally likely to get _________________, are dogs or cats more likely to have Coccidioidomycosis?
Blastomycosis -> dogs > cats
Histoplasmosis -> dogs = cats
Coccidioidomycosis -> dogs > cats
What bloodwork abnormalities can be expected on patients with Coccidioidomycosis?
- Normocytic, normochromic, nonregenerative anemia
- Neutrophilia with a left shift
- Monocytosis
- Hypoalbuminemia
- Hyperglobulinemia
- Hepatic enzymatic elevations
- Azotemia
While Crytpococcosis occurs more frequently in cats, dogs are often associated with a more ________ prognosis.
Guarded