<prompt> A female patient with clinical symptoms of systemic sclerosis present with shoness of breath and BL basal rales, her CXR showed reticular opacities in BL basal fields. What is the Next Best Step?Do CECTDo HRCTDo Pulmonary Function Test2D echocardiography  <response>: HO systemic sclerosis with shoness of breath and CXR findings are suggestive ofInterstitial lung diseaseILD. Investigation Of Choice for ILD is HRCT ILD is the most common pulmonary manifestatation of systemic sclerosis It occurs in about half of patients with diffuse disease and in about 13rd cases with limited disease. 