Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided PICC line has been removed . The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . There is persistent patchy opacity at the left lung base , suggesting a combination of atelectasis or consolidation and most likely with a small pleural effusion , but not well delineated . The pulmonary vasculature is indistinct and prominent suggesting mild vascular congestion . There is no pneumothorax .
    OUTPUT:
    
Findings suggesting mild vascular congestion . Persistent patchy left basilar opacity , probably parenchymal opacity with small pleural effusion , although not well delineated .