|Hello - I'm new here and was wondering if anyone would know anything about residual thymic tissue. In my latest CT It says I have residual thymic tissue in the anterior mediastinum. I also have nodules in my left lung base measuring approx. 5.5 mm in size. I am really having problems breathing...I always feel like I'm choking/being strangled so i feel I have to cough to be able to breath. Would one have anything to do with the other? I've already been tested for TB, Sarcoidoisis, and had a breathing test done. They all came back ok. I go see a Cardiothoracic Surgeon next week, I'm hoping he will be able to help me. But in the meantime I'm just trying to do a little research.