Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . There is marked mediastinal widening which extends into significant portion of the right hemithorax . In this patient with provided history of achalasia , findings are concerning for esophageal impaction . There is no evidence of aspiration . No large pleural effusion is seen . No pneumothorax . Heart size is difficult to assess . Bony structures appear intact .
    OUTPUT:
    
Findings concerning for esophageal impaction within a markedly dilated esophagus .