Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , a small right - sided subpulmonic pleural effusion is unchanged . Interval removal of the right - sided PICC . Heart size top - normal . Left lung is clear . No pneumothorax or focal consolidation . Unchanged clustered calcifications projecting in the left upper lobe , seen on prior CT
    OUTPUT:
    
Within the limitations of plain film radiography , no evidence of intrathoracic malignancy .