Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . The moderately enlarged heart appears unchanged . Thoracic aorta as before with marked extensive wall calcifications . The previously observed right - sided pleural effusion that blunts the lateral and posterior pleural sinus has again increased and reaches now to the mid portion of the right - sided lateral chest wall . On the lateral wall , the increased densities are located most posteriorly and have also increased when comparison is made between the lateral views . No new acute pulmonary infiltrates can be identified and there is no pneumothorax in the apical area . The patient has undergone a lymphangiogram on the preceding day , which showed some filling of lymphatic channels from the left leg up to the retroperitoneal structures and periaortic location . At no point was communication with the thoracic duct established . Thus , it is not surprising that any pulmonary arterial embolization with contrast particles can not be identified on the plain chest examination . It is possible , however , that lymphangiographic material has entered in the right lower pleural and pulmonary parenchymal territory as the CT examination of ___ suggested .
    OUTPUT:
    
Mild progression of pleural density on the right base , no conclusive evidence of contrast embolization .