Minimal effusion or pleural thickening ? From the readings you say here you are in very good condtion but this does not mean that you shouldn't follow up and the problem at that time was to insure that there was nothing going on but now this may have changed and i would ask a doctor to check this again if he thinks this is a good idea . and i think i would also to see if any thing has come about since the checks and also why this was done in the first place. so yes check with another doctor to be sure because the records are still there where you had the testing.

