Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse pulmonary interstitial abnormality . Several right midlung nodules are better evaluated on subsequent T - spine CT . There is no focal consolidation . Changes of coronary artery bypass grafting , with median sternotomy wires and mediastinal clips . Right atrial and ventricular pacemaker leads course in expected position . There is no pleural effusion or pneumothorax . Mild cardiomegaly could be related to mitral annulus calcification and possible valvular regurgitation . Aorta is tortuous and calcified .
    OUTPUT:
    
1 . Diffuse pulmonary interstitial abnormality , with several nodules . Please refer to subsequent T - spine CT for further details . Work up indicated for nodules . 2 . Mild cardiomegaly . Possible mitral regurgitation .