Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . A left lower lobe opacity obscures the left hemidiaphragm and has progressed since ___ . Small left pleural effusion is also noted . The right lung is clear . Moderate cardiomegaly is unchanged . The tip of the tunneled dialysis catheter terminates in the right atrium . No pulmonary edema or pneumothorax is detect .
    OUTPUT:
    
Progression of left lower lobe opacity which may reflect infection in the correct clinical context or worsening atelectasis . Small left pleural effusion , new from prior .