Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP chest radiograph provided . Lung volumes are quite low . Heart appears mildly enlarged . There is increased pulmonary opacity noted bilaterally , which in part could be exaggerated due to low lung volumes and bronchovascular crowding , though mild edema is difficult to exclude . Curvilinear calcification projecting over the heart likely reflects mitral annular calcification . The mediastinal contour is poorly assessed . Clips in the right upper quadrant noted .
    OUTPUT:
    
Mild cardiomegaly with probable mild pulmonary edema . Limited exam due to low lung volumes .