Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate left pleural effusion is again seen . Again , relative ground - glass opacity is seen projecting over the left upper lung similar to possibly minimally increased since the prior study given differences in technique . There may be a subtle right base opacity versus confluence of shadows . Bilateral left greater than right pleural plaques are seen including bilateral diaphragmatic plaques and plaques overlying the left upper hemithorax . Cardiac and mediastinal silhouettes are stable . There is no pneumothorax . There remains patchy left base retrocardiac opacity which could be due to atelectasis , although infection is not excluded .
    OUTPUT:
    
Moderate left pleural effusion which appears slightly increased . Persistent left lung ground - glass opacity which appears slightly increased . Findings may be due to infection superimposed on calcified pleural plaques ; however , given history of asbestos exposure , recommend further evaluation with possible thoracentesis if not performed since the prior study .