<s>[INST] I found a lump in my scrotum. It is not on the testicle, it feels like it is on the vas deferens. It is only on the right side and about the size of a large raisin. The left side has a very small lump, much smaller than a raisin. I had a vasectomy last December. Are these lumps likely from the vasectomy? [/INST] Good Day, and thank you for being with Chat Doctor ! Yes the lumps that you are feeling in your scrotum are due to the vasectomy that you underwent. These lumps could be suture granulomas that fibrosis during your normal healing process. You can just observe these lumps An Chat Doctor.  I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://www.ChatDoctor .com/doctors/ </s>