One should not worry about having a midline trachea. The trachea is almost always at, or near the midline. There is greater concern when the trachea is noted to be some distance from the midline, as tumors or enlarged blood vessels can push it off-line. You should ask your doctor the same question.
YES I HAD JUST GOTTEN AND ULTR SOUND FOR C-DIFF AND COLITIS AND THEY SAID THAT I HAD ON THE REPORT A MIDLINE TRACHEA.
Your question is somewhat confusing .... your trachea IS in the midline (the center of body). Was this statement part of a physical exam report or what ???