Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's clinical condition required examination semi-upright sitting position . AP frontal and left lateral views were obtained . Comparison can be made with the next preceding portable chest examination of ___ . The previous portable chest examination suggested heart size at the upper limit of normal variation . This finding is impossible to confirm as bilateral pleural densities conceal most of the cardiac silhouette . There is now an increased pulmonary vascular pattern and in addition related to the high positioned diaphragm very crowded appearance of the pulmonary structures is observed . Bilateral linear densities suggest atelectatic portions on the right base and mid lung field . The lateral view discloses now bilateral pleural effusions accumulating in the posterior portions and blunting the dependent inferior pleural sinuses . Extensive surgical metallic clips in the left axillary region appear unchanged . No pneumothorax is identified in the apical area . The position of the previously described right internal jugular approach central venous line is unchanged , reaching the area of the upper right atrium .
    OUTPUT:
    
Increasing pulmonary congestion with development of bilateral pleural effusion most likely related to CHF . Non-distended azygos vein speaks against general fluid overload and favors assumption of left - sided CHF .