Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Equivocal density at the right lung base may represent calcification of the costochondral junction , however a small area of pneumonia or aspiration can not be entirely excluded . There is no pleural effusion , pneumothorax , or pulmonary edema . Cardiomegaly is mild . A left pectoral single - chamber pacemaker lead projects over the right ventricle .
    OUTPUT:
    
1 . No definite acute cardiopulmonary process . 2 . Equivocal density at the right lung base may represent calcification of the costochondral junction , however small pneumonia or early aspiration can not be entirely excluded . Clinical correlation advised .