<prompt> Flowing wax appearance on anterior and posterior borders of veebrae is seen in -Ankylosing spondylitisDISHPsoriatic ahropathyRheumatoid ahritis  <response>: Radiological features of DISH Diffuse Idiopathic skeletal hyperostosis : Flowing calcification and ossification along the anterolateral aspect of veebral bodies. - Flowing wax appearance Preserved disc space. Absence of bony ankyosis of facet joints,absence of sacroiliac bony erosion,sclerosis or bony fusion. 