Cyst on umbilical cord spot

[Cindarelly]

One of the goslings we incubated and sold is a week and a half old and has a growing cyst where the umbilical cord was attached. It was rice sized, but has grown significantly in the past few days.

Any ideas?
Gosling is acting fine otherwise.

 

[BirdsBeesTrees]

Hmm... @Pyxis, have you seen this before?

 

[Cindarelly]

The gosling had a vet visit and it was an umbilical hernia. It was laser removed and all is well.