Spinal tumor?

[peehead]

A couple of days ago I noticed my 2 yr old brahma limping. I picked her up to inspect her legs and couldn't find anything wrong with them, but was surprised to find a lump on her back, a very large lump under her feathers, about 3 inches wide! The lump is hard and fixed, the skin is normal colored, not red and irritated. No blood or wound of anykind. Shes eating fine and had been wandering around the yard with the other chickens, but today I noticed she was a little less active and her comb seems a little pale. Just wondering if anyone out there might have any suggestions.

 

[Hippie Chicks Mom]

Could just be a cyst but need it looked into to be sure. Sounds as if she is worsening so leads me to believe it may be more serious. Good luck.