<prompt> Answer this question truthfullyIn what areas of the chest are fibrotic changes most prominently seen in cases of idiopathic pulmonary fibrosis IPF on CXRCT?  <response>: <reason> In what areas of the chest are fibrotic changes most prominently seen in cases of idiopathic pulmonary fibrosis IPF on CXRCT? Fibrotic changes in IPF appear as bilateral or diffuse reticular opacities, most prominent in lower lobes on CXRCT. 