Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pneumothorax , or pulmonary edema is seen . Cardiac silhouette and mediastinal contours are normal . Left proximal humeral opacity is noted and marked on chest radiograph . Differential includes benign bone island versus metastatic lesion . Recommend review of previous imaging to identify if new or chronic process .
    OUTPUT:
    
Left proximal humeral lesion noted with the differential including benign bony island versus metastatic disease . Recommend reviewing previous imaging if available to identify chronicity . Otherwise , normal chest radiograph .