Selected Diseases of the Dog and Cat

Question 1

A young cat has a head tilt, nasal discharge, and a pedunculated mass protruding from the Eustachian tube observed on oral exam. What is your diagnosis and what is the prognosis?

Answer 1

diagnosis: nasopharyngeal polyp
prognosis: good because amenable to surgical removal

Question 2

What agents are associated with feline infectious respiratory disease complex? (4)

Answer 2

1. feline herpesvirus-1
2. feline calicivirus
3. bordatella bronchiseptica
4. chlamydophila felis (to a lesser extend)

Question 3

What is the route of transmission of feline infectious respiratory disease complex?

Answer 3

direct transmission

Question 4

Which agent in feline infectious respiratory disease complex is most often associated with lingual and oral ulcers?

Answer 4

feline calicivirus

Question 5

Which agent in feline infectious respiratory disease complex is most often associated with conjunctivitis as the primary clinical sign?

Answer 5

chlamydophilia felis

Question 6

Which agent in feline infectious respiratory disease complex can be transmitted between dogs and cats?

Answer 6

bordatella bronchiseptica

Question 7

Cytologic evaluation of bornchiolar lavage fluid collected from a dog reveals a significant population of eosinophils. What general disease process should you consider - Neoplasia? Hypersensitivity? Pyothorax? Parasitism? Bronchopneumonia? Pulmonary mineralization?

Answer 7

hypersensitivity and parasitism

Question 8

What are the gross lesions and histopathologic or cytologic findings of cryptococcosis in cats?

Answer 8

gross lesions - no lung lesions, SQ nodules, lymphadenopathy, uveitis, graulomatous inflammation of nose bridge, ulceration of nasal planum

histopathology/cytology - macrophages with yeast buds

Question 9

What are the gross lesions and histopathologic or cytologic findings of blastomycosis in dogs?

Answer 9

gross lesions - numerous, milliary white to grey nodules scattered throughout lung accompanied by intrathoracic lymphadenopathy

histopathology/cytology - granulomas contain broad-budding yeasts

Question 10

How is cryptococcosis in cats contracted?

Answer 10

inhalation of the microorganism

Question 11

How is blastomycosis in dogs contracted?

Answer 11

Mycelia in environment release spores that are inhaled and trapped in terminal airways

Question 12

Describe the pathogenesis stages of canine distemper virus infection in dogs.

Answer 12

Canine distemper virus in aerosols
Day 0: replicated in respiratory epithelium and macrophages
Day 2: move to thymus, spleen, bone marrow, and retropharyngeal lymph nodes
Day 3-4: multiply in lymphoid system, intestinal lamina propria, and hepatic Kupffer cells
Day 7: viremia
Day 10: widespread invasion of all epithelial tissues, including lung and CNS

Question 13

What influences the outcome of distemper virus infection in dogs?

Answer 13

inadequate host immunity vs. adequate host immunity