Growth

My dog has this growth better his toes, the first picture is from a few weeks ago and the second picture is from today.

For history: he had something similar on his back foot last March, but it was on top of the toe on a different foot. The vet gave him some meds (last year and also a few weeks ago) but I just want to know what it is?

We did a biopsy on the one last year and it came back with nothing, but they said it was possibly a papilloma or some sort of cyst because it started with the cauliflower texture. The one on the back foot then kind of swelled like the one this time and eventually burst and went away after bursting.

This one seems to be similar, I just may have noticed it later because of its location.

He’s currently on cephalexin for it and we have the antifungal/antibacterial wipes. The vet said that it might have just gotten irritated at some point? I was just wondering if anyone else has experienced something like this and what it was?