What does new mild patchy opacities in the right lower love mean on a chest x-ray?

Often subjective, it: ... cd be benign or worrisome finding. Patchy opacity means something "more dense than air" is filling up patches (parts) of the lung. It cd be fluid (from pneumonia, heart failure, other lung diseases) or it cd be that part of the lung is under-inflated (called atelectasis) & so has more tissue than air. Or it's an artifact from d breast overlying it; so, d finding has 2 b correlated with symptom