Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . Diffuse airspace opacities predominantly affecting the right lung have substantially improved since CT of ___ . Incidental calcified granuloma in left upper lobe . . There is no pleural effusion or pneumothorax . Heart size is top normal . There is no free air under the bilateral hemidiaphragms . There is no acute osseous abnormality .
    OUTPUT:
    
Rapidly improving asymmetrically distributed airspace opacities which may correspond pulmonary hemorrhage given clinical suspicion for this entity . Differential diagnosis includes asymmetrical edema and atypical / opportunistic infection .