Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small right pleural effusion and a right lower lobe opacity . There is also concurrent mild interstitial pulmonary edema . A fiducial marker is seen in the right upper lobe . There is no pneumothorax . Cardiac silhouette is unchanged .
    OUTPUT:
    
Small right pleural effusion and mild interstitial pulmonary edema most consistent with decompensated congestive heart failure . However , given the strong clinical evidence for an infectious process , right lower lobe pneumonia must be suspected .