title: Radiological evidence of initial changes in the sacroiliacal joint in an ankylosing spondylarthritis.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging*; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging*; D014056:Tomography, X-Ray