Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with earlier the same day , a pigtail catheter has been placed at the left lung base , in addition to the pre-existing left base chest tube . Diffuse opacity of the left lung has increased in density -- question due to increased layering fluid in ( both views are supposedly upright ) versus an additional superimposed process . Left lower lobe collapse and / or consolidation and blunting of left costophrenic angle are again seen . Previously seen small left base hydro pneumothorax is not appreciated at present . No pneumothorax is identified . There is patchy opacity in the right upper zone , including in triangular opacity which appears to lie immediately above the expected location of the minor fissure , , with suggestion of slight upward bowing of the minor fissure . The cardiomediastinal silhouette is probably unchanged allowing for differences in positioning and remains grossly midline .
    OUTPUT:
    
1 . Interval placement of left pigtail catheter . No pneumothorax detected . 2 . Interval increase in degree of opacity diffusely in the left lung . Question increased pleura effusion versus superimposed process , such as asymmetric CHF . 3 . Left lower lobe collapse and / or consolidation , unchanged . 4 . New predominately triangular opacity in the right upper zone . There is slight upward bowing of the minor fissure and this likely represents atelectasis .