What does Opacity in lung mean?

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Tags

1. #pulmonary
2. #vital
3. #radiograph
4. #reviewing
5. #where
6. #decrease
7. #result
8. #blood
9. #attenuation
10. #parenchyma
11. #increased
12. #tissue
13. #opacification
14. #represents
15. #determine
16. #ratio
17. #chest
18. #stroma