When my two had growths that looked like blood blisters but didn't go away after a few weeks, I had them removed. One was a cutaneous hemangioma and one was an angiokeratoma. Both were benign but the pathology report said that if left they can sometimes progress to the malignant form, cutaneous hemangiosarcoma, so I was really glad I'd had them removed.
Not saying that's what Wayne's got, but hoping for something benign in any event .