Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal chest radiograph demonstrates unremarkable cardiomediastinal and hilar contours . Assymetric right apical thickening present . Otherwise , lungs are clear , though there is a relative hyperlucency of the bilateral upper lungs suggesting emphysema . No pleural effusion or pneumothorax evident .
    OUTPUT:
    
No acute process . Assymetric right apical thickening . If patient has symptoms to lesion within this region ( ie . arm pain ) , recommend further evaluation with CT . In abscence of symptoms , could be further evaluated with conventional radiographs and / or comparison with prior studies .