Gosling with growth on stomach, please advise

[greytmommy]

ok, my new gosling has a growth on it's stomach.
I was told that it was probably his belly button. Well...it has gotten bigger and looks black and necrotic.

Here is what it looked like on Sunday:

http://i194.photobucket.com/albums/z309/IGgreyhoundgirl/IMG_20120428_191405.jpg



and now here it is tonight:

http://i194.photobucket.com/albums/z309/IGgreyhoundgirl/100_4743.jpg




What should I do?

 

[Kevin565]

It could be Omphalitis

 

[greytmommy]

Sunday:



now today:

 

[bigbird]

Did you ever find out what was wrong with him? Did it correct itself? Thanks!