How likely would this health issue be?
Penny has a lump approximately 3 inches in diameter on her left loin. It feels like it is located under her spine right in front of her pelvis and is bulging out on the left loin just slightly, forming a lump that can be felt and just barely seen. It does not feel like a fatty tumor. The vet thinks she may have a chiropractic issue because she has pain on palpation, but he is stumped because the pain seems to come from a general area rather than just the spine. He gave me a referral to a doggy chiro.
Penny has a limp in the left hind leg and has muscle atrophy in that limb from favoring it. She is careful how she lays down and gets up, but she lays on each side equally and even sometimes flat on her back with her feet in the air. She does not stand with her back hunched up or saggy. When I take her for her twice daily walks, she heads out at a brisk trot and I have to jog to keep up with her. She only slightly limps at a trot and she will gallop if I let her. When retrieving marks she will fly off the line and run with gusto, no signs of pain or limping until we get back in the house.
I am having little red flags in my mind, something that is saying to me "It's maybe not a spinal issue". She is just too active and twisty-turny. She has been in the field almost every day of her life either hunting or training. So I wonder if it could be a foxtail that had migrated some time ago and been walled off, creating a large mass that is pressing upward on the spine? Or maybe lodged in the spinal column itself?
I am hesitating to have her undergo chiropractic if it could be a foxtail issue. Should I ask my vet to x-ray her for a possible foxtail first, or is my theory highly unlikely?