Avian articles

Question 1

How to differentiate SCC from papilloma?

Answer 1

SCC- higher COX-2, lower e-cadherin IHC

Question 2

Characteristic lesion with Enterococcus cecorum

Answer 2

Vertebral osteomyelitis at FTV

Question 3

Main three causes of gangrenous dermatitis

Answer 3

C. perfringens A, C. septicum, C sordelli

Question 4

What gross lesion does pigeon herpesvirus 1 cause? Key histo?

Answer 4

Multifocal liver necrosis; eosinophilic INIBs

Question 5

Lesions associated with psittacid alphaherpesvirus 5

Answer 5

Respiratory lesions with INIBs, hepatic necrosis

Question 6

Where are the most lesions observed with lead toxicity in bald eagles? Second? Key histo?

Answer 6

Heart- pallor and rounding of apex; brain hemorrhage/necrosis; fibrinoid necrosis of small-medium arteries

Question 7

What is the most common round cell neoplasm in psittacines?

Answer 7

B cell lymphoma

Question 8

What is associated with infection with macrorhabdus ornithogaster in budgies?

Answer 8

Proventricular adenocarcinoma

Question 9

Species of trematode in bald eagles (liver fluke)

Answer 9

Erchoviorchis anuiensis

Question 10

Tumor associated with medullary bone formation in budgies; gross lesion

Answer 10

Testicular- all; pneumatic bones (femur) are white instead of grey/red, pneumatic spaces filled with medullary bone

Question 11

Changes associated with testicular tumors in male budgies

Answer 11

Cere color change, medullary bone formation, widening of pelvic inlet

Question 12

Cause of paraparesis in feral conures; key histo

Answer 12

Bromethalin toxicosis; white matter cell death (myelin loss)

Question 13

Unusual presentation of infectious coryza (avibacterium paragallinarum)

Answer 13

Neurologic- meningoencephalitis and otitis

Question 14

Most common comorbidity with systemic poxvirus

Answer 14

Aspergillosis

Question 15

Key histo with systemic avian poxvirus

Answer 15

Histiocytic inflammation in viscera with intrahistiocytic cytoplasmic viral inclusions

Question 16

Lesions seen in red tailed hawks with aviadenovirus

Answer 16

Bone marrow, spleen, and liver necrosis within INIBs

Question 17

Unusual presentation of psittacosis

Answer 17

Meningoencephalomyelitis, otitis, bursitis, nephritis, orchitis

Question 18

Cause of myocardial granuloma in a wild turkey; coinfections (2)

Answer 18

Listeria monocytogenes; Lymphoproliferative disease, reticuloendotheliosis virus

Question 19

Gross lesions in wild birds of prey with HPAI

Answer 19

Forebrain hemorrhage, myocarditis, pancreatic necrosis