Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Low lung volumes . Lungs are clear . Cardio mediastinal silhouette grossly unremarkable . A diffusely mottled appearance of the bones raises potential concern for underlying disease .
    OUTPUT:
    
Abnormal mottled appearance of the bony structures , question demineralization versus malignant infiltration . No evidence of pneumonia or edema .