OMG! I would demand that she look at them again! Everything I have seen about polymyositis and MCTD and the like has to do with those antibodies. I would tell her that you aren't satisfied with what she thinks and I would look at some actual medical reports online that talk about these things so she can't dismiss them. I have read articles about this online from medical journals. I tested positive for SSA, RNP, Sm, and ANA when I was first diagnosed. The results just say "positive" though and give the values so I don't know what was considered high. But if your 117 was high for RNP I would assume my 256 was high too lol I think the reason my rheum will probably never say polymyositis is because of the antibody, even though it basically sounds like the difference between myositis and polymyositis is one is a one time thing and the other is a recurring problem. I would definately ask about those tests again. Even if they are down now that would be expected with meds. Mine are still positive but all are much lower than before I was dx'd.