Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath tip terminates at the junction of the SVC and right atrium . Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Previously demonstrated pulmonary nodules on CT are not well assessed on the current exam . Lungs are clear . Trace left pleural effusion is similar compared to the prior CT and chest radiograph . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Trace left pleural effusion appears chronic . No acute cardiopulmonary abnormality otherwise demonstrated . Known pulmonary nodules are better assessed on the previous CT .