Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The thoracic esophagus is diffusely distended and contains an air - fluid level within its lower thoracic portion . Heart is upper limits of normal in size and demonstrates left ventricular configuration . The aorta is tortuous . Lungs are clear except for a new peripheral patchy opacity at the left lung base . There are no pleural effusions . Bones are diffusely demineralized .
    OUTPUT:
    
1 . No radiographic findings to suggest active or latent pulmonary tuberculosis infection . 2 . Distended thoracic esophagus with air - fluid level , suggesting esophageal dysmotility or achalasia . 3 . New peripheral patchy left lower lobe opacity , most likely due to focal atelectasis . Differential diagnosis includes focal aspiration and an early infectious pneumonia . Short - term followup radiographs may be helpful in this regard if warranted clinically .