i don't think they are kaposi sarcoma. you have had these for years. i think it is just maybe moles or scars from ingrown hairs. if you are that worried have a doctor look at them. stop worrying. besides making yourself over distraught go to a doctor or a dermatologist. these haven't changed in years. if you had ks they would look like ulcers now. for your own peace of mind have them checked out but i don't think it is anything for you to get yourself upset about.