Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left hemidiaphragm is entirely obscured . Increased density over the costophrenic angles on the lateral projection could represent a small effusion or a small focal consolidation in the proper clinical setting . There is no pneumothorax or pulmonary edema . Cardiomegaly is mild and unchanged .
    OUTPUT:
    
Increased density overlying the posterior costophrenic angle on the lateral projection could represent a small pleural effusion or small focal consolidation in the proper clinical setting . Examination is limited due to obscuration of the left hemidiaphragm , possibly due to a pericardiac fat pad .