Yes, itâ€™s definitely possible and very likely. You might light up on a bone scan though like I did at first. I was diagnosed with AS almost right away. I had sacroilitis show up for years, but after being on biologics for so long then my xrays showed evidence of prior sacroilitis, and now they donâ€™t say anything. Itâ€™s very strange. My SI joints still hurt, but not as bad as they did in the beginning years, but I attribute that to continuous biologics since 2005.
My spine has gotten progressively worse. But now I might be more considered as non radiographic axial Spondylitis. Iâ€™m HLA negative, but am textbook AS (besides SI fusion lessening). I read Kahnâ€™s book and it describes me exactly, even the same order of symptom appearance. And Iâ€™m a woman!