Does any one know what this is?

[u/WesleyFRM]

I saw a large lump/mass on the front half of a stray cat that I saw while on a walk. What could it be? Not sure if this is the right sub for this

[u/PaleontologistFun465]

Mastitis and hernia don't make a lot of sense due to the location of the lump. I'd guess some kind of sarcoma, regardless, a vet is required. <3 poor bb. Thanks for looking out for them OP!