Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study of ___ . Markedly increased basal density in the right hemithorax is indicative of rapid development of pleural effusion . No significant mediastinal shift noted . Left side is better aerated and shows a plate atelectasis on the base . The pulmonary vasculature does not show any marked congestive pattern and the left lateral pleural sinus remains free .
    OUTPUT:
    
Rapid development of extensive right - sided pleural effusion . The amount of effusion makes thoracocentesis indicated . Telephone call was placed at 4 :40 p .m . to FA10 , telephone #___ . Dr . ___ was reached by telephone and the case was discussed . ___ is likely to be performed with short notice .