Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates a right central catheter with the tip in the mid SVC . The heart is top normal in size and the lung volumes are low . Multiple pulmonary nodules are better evaluated on recent CT chest . Fullness of mediastinal and upper lobe pulmonary vessels may be secondary to change in patient position and a more lordotic view . There is no large pleural effusion , and no pneumothorax .
    OUTPUT:
    
Fullness of mediastinal and upper lobe pulmonary vessels are likely secondary to change in patient position and a more lordotic view . Otherwise unchanged chest radiograph .