Whats wrong with this doe?

[BBReezen]

Implants!

This!! I would make sure I hunted her area hard, she’s gonna be the first doe all the bucks run to!!!

[lab man]

Mastitis

x4

She seems to be in good shape otherwise and she appears to be able to jump in and out of the feed pen okay.
I wouldn’t be too worried about her right now.

[catslayer]

If it's been there 2 years I have a hard time thinking it's mistitis... More like a tumor or cyst... Maybe a thorn with some crazy infection but again, been there a LONG time.

[Low Fence]

Mastitis

^^^ yep

[2B4Him]

x4

She seems to be in good shape otherwise and she appears to be able to jump in and out of the feed pen okay.
I wouldn’t be too worried about her right now.

She does look healthy otherwise, but daaaaang - it seems like it would hurt for her to jump in the pen (and what if that gets caught up on the fence??).

[Fishndude]

I’ve had one like that for years. Always healthy

[Dusty Britches]

Mastitis or a tumor.

If she was in my area the GW would tell me to let nature take its course or shoot her during legal season and put my tag on her.

[Fishndude]

[Throwin Darts]

Mastitis

This right here.

I have a doe with it too.

[bullhead44]

transitioning?

[RLB]

A FUPA...?

[Deerguy]

Could be a few things. Seroma is most likely, followed by hernia, followed by abdominal injury that has led to fluid (blood and others) build up. None are of immediate concern by themselves, but the location most likely renders the injury incapable of proper healing. Once the area becomes septic, it'll be bad news for her (shoot her before this comes into play).