. Neelix losing his lung - does this have ANY significance to the series? In fact is this even mentioned again in the series? I think the answer to both is "no."
Only have time to say... yes. In Macrocosm, Janeway uses a medical tricorder on Neelix after he's been stung, and she says there is fluid filling up his lungS. he corrects her and says... "Lung."
Was it's mention significant? Maybe not, but it was fun to hear the continuity.
Later for other thoughts.