Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased opacity seen at the left lung apex . . Right lung remains clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Asymmetric left apical opacity compatible with patient 's history of pulmonary tuberculosis . Acuity is difficult to ascertain without priors to document stability however no cavitary lesion visualized .