Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , a left lower lobe opacity has partially cleared . Poorly defined subcentimeter nodular opacities are also demonstrated at approximately the level of the fifth anterior rib bilaterally , possibly due to nipple shadows but not definitively localized . Exam is otherwise remarkable for a focal area of peripheral scarring at the right base and relatively symmetrical mild biapical pleural and parenchymal scarring . Heart size is normal , and there is no evidence of mediastinal or hilar lymphadenopathy . There is no pleural effusion .
    OUTPUT:
    
Partial clearing of left lower lobe opacities likely due to resolving pneumonia . Poorly defined nodular opacities potentially represent nipple shadows .