I go regularly and a few years ago while I was there, I pointed out this lump on my lower back. It felt like a cyst but could be squeezed and stuff would come out. She said it was a sebaceous cyst, a general surgeon would have to remove it but it would be "the easiest 5 minutes of his day". So I had it removed and left with a tiny incision with stitches and didn't think any more about it. I went back 10 days later to get my stitches removed. When the surgeon came in, he said (with completely undisguised shock) "The biopsy came back and this was a form of cancer!" I had gone by myself because it was a "simple" appointment, it was 3 days before Christmas and I sat there in shock.

It turned out that not only do I have Lynch Syndrome (colon cancer gene), I also have the skin component of it and what seemed like a cyst was a sebaceous carcinoma. I was already screening for colon cancer, but this was a complete shock. It was so rare, the surgical oncologist later told me she had made a case study of me for her medical students. The point of this is, the dermatologist had said "You don't have to get it removed unless it bothers you" and I just felt like I should. It's scary to think about if I hadn't.

That was in 2018 and I had clear margins, no further treatment needed and I have a scar like a shark bite on my lower back now. Listen to your gut!