ASPS primary in the arm
ASPS primary in the arm
I have just one photo of what it looked like. Felt solid, didn't hurt. Did not grow after appearing for 6 months. There are many harmless things (i.e. cysts, etc) which look, and feel very similar. More for curiousity's sake, since it would be silly to suspect you have ASPS based on symptoms - it's just so damn unlikely.