Scarlet Macaw with decreased appetite

by Allison Zwingenberger on November 27, 2008

This week we have an avian case contributed by Dr. Leila Marcucci. Perhaps that’s an appropriate species for Thanksgiving! It’s a 21-year-old female Scarlet Macaw who presented for increased water intake, watery droppings and decreased appetite. Have a look and post your comments below. Answers available on Monday.

Lateral radiograph

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{ 4 comments… read them below or add one }

vet74 November 27, 2008 at 7:18 am

Well , I am vegeterian…
The vertebras and the areas of the femoral head and humeral head seem a more radiolucent than what I would expect, but on the other hand I haven’t seen many rads of Macaws…

giglior November 27, 2008 at 5:48 pm

Hi there!

There is a rounded, well defined, soft tissue opaque mass in the caudal coelom, superimposed to the pelvic limbs. I think the hepatic silhouette is decreased in size. There a heterogeneous increased opacity within the medulary cavities of the femur and tibiotarsus, bilaterally. My first differential for that is polyostotic hyperostosis with a non-calcified egg. The possibility of a coelomic neoplasia such as oviductal tumor also needs to be considered.
Have an excellent Thanksgiving!!

Sam Verstraete December 8, 2008 at 7:29 am

Hi there,

as a therapy they performed a salpingohysterectomy. Why didn’t they removed the ovarium. What happens with the next ege. It will fall in the abdomen cavity and caused an ege-peritonitis?

Allison Zwingenberger December 9, 2008 at 3:13 pm

Sam, here’s the response from Dr. Marucci:

A salpyngohysterectomy does not include removal of the ovaries – they are intimately associated with the aorta and attempted surgical removal has a high risk of severe hemorrhage.

The concern is that follicles will mature and drop into the coelomic cavity, possibly causing an egg yolk coelomitis. This is a valid concern and is a side effect we often see. It is possible for birds to drop an active follicle and not generate an infection or only develop a mild self-limiting infection. In this bird’s case, she has a history of only 1 egg being produced previously. She has had a single incident of egg yolk coelomitis in the past (with her reproductive tract intact!). Therefore, she has a much lower risk of egg yolk coelomitis than some birds.

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