Lump Around Boar's Nipple..?

[Fluffball]

Did the weekly checks on the piggies today, and found that Arthur, one of our two boys, who is about 4 years old, had a fairly large lump underneath his left nipple. It's about the size of 2/3rds of a baked bean, and seems fairly hard. The nipple itself looked a tad swollen, but there is no discharge coming out. I've booked an appointment at the vets for tomorrow, which was the earliest I could get, but just wanted to see if anyone else has found anything like this? Really hoping it's only a fatty deposit.

 

[sport_billy]

Hopefully just a fatty lump, Cookie has a few on her belly. Well done for getting the vets booked so quick, please let us know. Fingers crossed for Arthur x

 

[DoragonHinansho]

Hopefully it's nothing serious; but good idea at the vet appointment!

I'll keep my fingers crossed! Xx

 

[Wiebke]

Best of luck at the vets! Any lump needs to be checked by a vet.

 

[Fluffball]

Just got back from the vets, and the vet has given it an all clear for now.
As he didn't squeak when he was being touched, she thinks it is probably just two fatty lumps (one inside and under the nipple) but has said to keep an eye on it for the next two weeks anyway.
I've attached two images of what it looked like in case anyone who had had piggies with fatty lumps has seen anything similar.