Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left - sided hydropneumothorax , similar compared to prior . Rounded opacity projecting over the left mid lung is likely due to fluid tracking within the fissure . Left chest tube project over the region of the diaphragm . Right lung is grossly clear . The cardiomediastinal silhouette is unchanged noting extra density in the left suprahilar region compatible with patient 's known adenopathy . Known pulmonary nodules are not clearly seen .
    OUTPUT:
    
Persistent hydropneumothorax on the left and abnormal contour or of the left mediastinum is similar compared to exam from ___ .