Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a 4 to 5 mm nodular opacity projecting over the left mid lung field . No focal consolidation is seen . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . No displaced fracture seen .
    OUTPUT:
    
4 to 5 mm nodular opacity projecting over the left mid lung field . Recommend shallow obliques or chest CT for further evaluation for possible underlying pulmonary nodule .