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Ask Dr. Michael Salkin Your Own Question
Dr. Michael Salkin
Dr. Michael Salkin, Veterinarian
Category: Bird Veterinary
Satisfied Customers: 24462
Experience:  University of California at Davis graduate veterinarian with 44 years of experience
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My cockatoo has a large soft mass on s underbelly, I have

Customer Question

my cockatoo has a large soft mass on his underbelly, I have had a vet down a while ago and was told not to worry about it but it seems to be growing bigger, what is that? and what should I do?
Submitted: 1 year ago.
Category: Bird Veterinary
Expert:  Dr. Michael Salkin replied 1 year ago.

I'm sorry that your question wasn't answered in a timely manner. I would need to needle aspirate that mass and examine the aspirate microscopically to be able to tell you what the mass represents because birds can develop quite an assortment of masses. A xanthoma - a fatty-cholesterol-laden mass, however, is one of the more common masses appearing in the area you've described.

If, indeed, a xanthoma is present, some birds will respond to nutritional therapy. Often these birds are on high fat, all seed diets. Weaning slowly onto a balanced diet (pellets + fruits and vegetables) plus supplementation with vitamin A or vitamin A precursors may be successful. If the xanthoma continues to enlarge, or becomes ulcerated, bleeding, infected or painful, surgical removal is required. If the mass is left untreated, it may become large enough to impair the bird's movements. In addition, the bird becomes susceptible to sudden bleeding episodes and may bleed to death.

The goal of surgery is to completely remove the xanthoma and any surrounding fatty, necrotic or ulcerated skin. The more complete the excision, the less likely the tumor will recur. Sometimes the tissue so diffusely infiltrates areas of surrounding skin that surgical excision may be incomplete; in these cases, the mass will be "debulked" as much as possible. In some cases, the xanthoma is so large that to remove it all would not leave enough healthy skin to close the surgical wound. Suturing incompletely removed xanthomatous tissue is complicated by the fact that the tissue is weak and may not hold the sutures well.

Please respond with further questions or concerns if you wish.

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