however, a fir tree is not parasitic, and a lung may not provide habitable environment for the plant. assuming it was a common fir species, then the one that should be the problem should’ve been the roots, not the leaves.

Vernon, I know that it may be a hoax, but you must consider the possibility that the tissue and fluid around part of the seedling were removed, and the rest of what we are looking at is benign growth of tissue around the foreign object that temporarily protected the man from further damage to his lungs’ functionality. As It grew it became uncomfortable and dangerous, but I could imagine this man could cough for months without going to the doctor, and even then, it was the bleeding that made him get checked out. perhaps it was not visible in tests, and this “tumor” is what led to its revelation.