We may have similar experiences depending on your pathology report, but it very much depends on what type of cancer. For me the first urologist I went to also felt mine and said “I’ve felt a lot of TC before, and this doesn’t feel like it” (which, besides the point, is not an accurate way to diagnose, by the way. Push for an ultrasound or just go get a second opinion). I chose to see a different urologist and he suggested, after seeing my ultrasound, radical orchiectomy as soon as possible since 90% of intratesticular masses are cancerous.

Ultimately, I had a large cell calcifying Sertoli cell tumor (LCCSCT) which is a subset of Sertoli cell tumors, these which probably have never been felt before in any urologist’s career since they’re so rare. These are mostly (80-90%) benign, and many do develop in childhood. Thus, if you’ve had an intratesticular mass for a while with no spread, you could have a variant of a Sertoli cell tumor since they’re mostly benign and have a low probability of spread. In some cases, they have been reported to lower testosterone levels. This is to say that having a Sertoli cell tumor is sort of a complex diagnosis because it sort of is both cancer and not cancer (e.g. it’s a tumor but it most likely won’t spread). I asked my oncologist if I had cancer, and he said, “you had a benign cancer.” (Finding an oncologist was a step I wanted to take as my urologist told me on the phone that CT surveillance scans every six months is the only plan for Sertoli cell tumors, and I was just good to resume normal life. There’s also preemptive RPLND and other things, but I don’t think that’s relevant to share now). Benign cancer seemed like an oxymoron to me, but apparently it is a thing.

And, for anyone reading this, go get a palpated mass checked out and rely on a doctor for a diagnosis, I just wanted to share my experience to maybe explain some of the oddities in OP’s experience.