Interval increase in left pleural effusion, which appears loculated. The complexity of the effusion versus possible loculated hydropneumothorax cannot be fully characterized due to obscured left hemidiaphragm; however, an air-fluid level is noted on the lateral view. Further evaluation with chest CT is recommended as clinically indicated, or continued follow-up with chest X-ray.
Hydropneumothorax (Uncertain) Loculated pleural effusion (Present)