Lump on Leg

Has anyone seen a lump on the hock joint like this? This is my one year old “Easter egger”, who is a bit of an anomaly herself. She has only ever laid 3 eggs but sits in the nest box every day. I noticed this lump last Wednesday, I have been checking on it everyday with no change and she has been acting normal. Sunday night I decided to aspirate it with a 18g needle to see if anything was inside. Nothing came out, except it bled. It appears to be solid and somewhat vascular. I held off on cutting into it because she was acting normal. I cleaned it up, put on antibiotic cream and wrapped it lightly to keep it clean. I came home from work today to find her limping pretty bad on that leg. I have separated her into my little hospital but I’m at a loss. I can’t find anything on the internet that looks like this. I have no fear of cutting it open if it’s just infection that needs cleaned out, like a bumble. I’ve done those surgeries a lot but I worry it’s a cancer tumor and I may not be able to stop the bleeding. These pics are from Sunday night.

I’ll just say, no vets in my area will see chickens. I have called all of them, a few times. There is one that will see chickens that is over a two hour drive one way and getting an appointment is a long shot.